More STM32 DAC driver logic
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4186 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
parent
18d89455ad
commit
b890380f57
@ -65,7 +65,7 @@
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#include "lpc17_pinconn.h"
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#include "lpc17_dac.h"
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#if defined(CONFIG_LPC17_DAC)
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#ifdef CONFIG_LPC17_DAC
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/****************************************************************************
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* Private Types
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@ -91,17 +91,17 @@ static int dac_interrupt(int irq, void *context);
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static const struct dac_ops_s g_dacops =
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{
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.ao_reset =dac_reset,
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.ao_setup = dac_setup,
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.ao_shutdown = dac_shutdown,
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.ao_txint = dac_txint,
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.ao_send = dac_send,
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.ao_ioctl = dac_ioctl,
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.ao_reset =dac_reset,
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.ao_setup = dac_setup,
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.ao_shutdown = dac_shutdown,
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.ao_txint = dac_txint,
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.ao_send = dac_send,
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.ao_ioctl = dac_ioctl,
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};
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static struct dac_dev_s g_dacdev =
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{
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.ad_ops = &g_dacops,
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.ad_ops = &g_dacops,
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};
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/****************************************************************************
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@ -114,22 +114,21 @@ static struct dac_dev_s g_dacdev =
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static void dac_reset(FAR struct dac_dev_s *dev)
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{
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irqstate_t flags;
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uint32_t regval;
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irqstate_t flags;
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uint32_t regval;
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flags = irqsave();
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flags = irqsave();
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regval = getreg32(LPC17_SYSCON_PCLKSEL0);
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regval &= ~SYSCON_PCLKSEL0_DAC_MASK;
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regval |= (SYSCON_PCLKSEL_CCLK8 << SYSCON_PCLKSEL0_DAC_SHIFT);
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putreg32(regval, LPC17_SYSCON_PCLKSEL0);
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regval = getreg32(LPC17_SYSCON_PCLKSEL0);
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regval &= ~SYSCON_PCLKSEL0_DAC_MASK;
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regval |= (SYSCON_PCLKSEL_CCLK8 << SYSCON_PCLKSEL0_DAC_SHIFT);
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putreg32(regval, LPC17_SYSCON_PCLKSEL0);
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//putreg32(DAC_CTRL_DBLBUFEN,LPC17_DAC_CTRL); ?
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//putreg32(DAC_CTRL_DBLBUFEN,LPC17_DAC_CTRL); ?
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lpc17_configgpio(GPIO_AOUT);
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irqrestore(flags);
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lpc17_configgpio(GPIO_AOUT);
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irqrestore(flags);
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}
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/* Configure the DAC. This method is called the first time that the DAC
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@ -140,7 +139,7 @@ static void dac_reset(FAR struct dac_dev_s *dev)
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static int dac_setup(FAR struct dac_dev_s *dev)
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{
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return OK;
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return OK;
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}
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/* Disable the DAC. This method is called when the DAC device is closed.
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@ -159,17 +158,17 @@ static void dac_txint(FAR struct dac_dev_s *dev, bool enable)
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static int dac_send(FAR struct dac_dev_s *dev, FAR struct dac_msg_s *msg)
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{
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putreg32((msg->am_data>>16)&0xfffff,LPC17_DAC_CR);
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dac_txdone(&g_dacdev);
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return 0;
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putreg32((msg->am_data>>16)&0xfffff,LPC17_DAC_CR);
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dac_txdone(&g_dacdev);
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return 0;
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}
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/* All ioctl calls will be routed through this method */
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static int dac_ioctl(FAR struct dac_dev_s *dev, int cmd, unsigned long arg)
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{
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dbg("Fix me:Not Implemented\n");
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return 0;
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dbg("Fix me:Not Implemented\n");
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return 0;
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}
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static int dac_interrupt(int irq, void *context)
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@ -181,7 +180,7 @@ static int dac_interrupt(int irq, void *context)
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****************************************************************************/
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/****************************************************************************
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* Name: up_dacinitialize
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* Name: lpc17_dacinitialize
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*
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* Description:
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* Initialize the DAC
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@ -191,9 +190,10 @@ static int dac_interrupt(int irq, void *context)
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*
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****************************************************************************/
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FAR struct dac_dev_s *up_dacinitialize()
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FAR struct dac_dev_s *lpc17_dacinitialize(void)
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{
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return &g_dacdev;
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return &g_dacdev;
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}
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#endif
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#endif /* CONFIG_LPC17_DAC */
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@ -609,7 +609,7 @@ EXTERN int lpc17_ssp1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bo
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#endif
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/****************************************************************************
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* Name: ssp_flush
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* Name: spi_flush
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*
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* Description:
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* Flush and discard any words left in the RX fifo. This can be called
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@ -756,6 +756,21 @@ EXTERN void lpc17_dmadump(DMA_HANDLE handle, const struct lpc17_dmaregs_s *regs,
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#endif
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#endif
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/****************************************************************************
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* Name: lpc17_dacinitialize
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*
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* Description:
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* Initialize the DAC
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*
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* Returned Value:
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* Valid dac device structure reference on succcess; a NULL on failure
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*
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****************************************************************************/
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#ifdef CONFIG_LPC17_DAC
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EXTERN FAR struct dac_dev_s *lpc17_dacinitialize(void);
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#endif
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#undef EXTERN
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#if defined(__cplusplus)
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}
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@ -48,6 +48,65 @@
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/* Alternate Pin Functions: */
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/* ADC */
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#define GPIO_ADC1_IN0 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN0)
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#define GPIO_ADC1_IN1 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN1)
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#define GPIO_ADC1_IN2 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN2)
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#define GPIO_ADC1_IN3 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN3)
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#define GPIO_ADC1_IN4 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN4)
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#define GPIO_ADC1_IN5 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN5)
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#define GPIO_ADC1_IN6 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN6)
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#define GPIO_ADC1_IN7 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN7)
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#define GPIO_ADC1_IN8 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTB|GPIO_PIN0)
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#define GPIO_ADC1_IN9 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTB|GPIO_PIN1)
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#define GPIO_ADC1_IN10 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTC|GPIO_PIN0)
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#define GPIO_ADC1_IN11 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTC|GPIO_PIN1)
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#define GPIO_ADC1_IN12 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTC|GPIO_PIN2)
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#define GPIO_ADC1_IN13 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTC|GPIO_PIN3)
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#define GPIO_ADC1_IN14 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTC|GPIO_PIN4)
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#define GPIO_ADC1_IN15 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTC|GPIO_PIN5)
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#define GPIO_ADC2_IN0 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN0)
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#define GPIO_ADC2_IN1 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN1)
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#define GPIO_ADC2_IN2 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN2)
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#define GPIO_ADC2_IN3 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN3)
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#define GPIO_ADC2_IN4 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN4)
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#define GPIO_ADC2_IN5 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN5)
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#define GPIO_ADC2_IN6 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN6)
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#define GPIO_ADC2_IN7 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN7)
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#define GPIO_ADC2_IN8 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTB|GPIO_PIN0)
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#define GPIO_ADC2_IN9 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTB|GPIO_PIN1)
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#define GPIO_ADC2_IN10 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTC|GPIO_PIN0)
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#define GPIO_ADC2_IN11 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTC|GPIO_PIN1)
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#define GPIO_ADC2_IN12 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTC|GPIO_PIN2)
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#define GPIO_ADC2_IN13 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTC|GPIO_PIN3)
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#define GPIO_ADC2_IN14 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTC|GPIO_PIN4)
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#define GPIO_ADC2_IN15 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTC|GPIO_PIN5)
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#define GPIO_ADC3_IN0 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN0)
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#define GPIO_ADC3_IN1 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN1)
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#define GPIO_ADC3_IN2 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN2)
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#define GPIO_ADC3_IN3 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTA|GPIO_PIN3)
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#define GPIO_ADC3_IN4 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTF|GPIO_PIN6)
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#define GPIO_ADC3_IN5 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTF|GPIO_PIN7)
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#define GPIO_ADC3_IN6 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTF|GPIO_PIN8)
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#define GPIO_ADC3_IN7 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTF|GPIO_PIN9)
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#define GPIO_ADC3_IN8 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTF|GPIO_PIN10)
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#define GPIO_ADC3_IN10 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTC|GPIO_PIN0)
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#define GPIO_ADC3_IN11 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTC|GPIO_PIN1)
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#define GPIO_ADC3_IN12 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTC|GPIO_PIN2)
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#define GPIO_ADC3_IN13 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTC|GPIO_PIN3)
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/* DAC - "Once the DAC channelx is enabled, the corresponding GPIO pin
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* (PA4 or PA5) is automatically connected to the analog converter output
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* (DAC_OUTx). In order to avoid parasitic consumption, the PA4 or PA5 pin
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* should first be configured to analog (AIN)."
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*/
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#define GPIO_DAC_OUT1 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PORTF|GPIO_PIN10)
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#define GPIO_DAC_OUT2 (GPIO_ALT|GPIO_CNF_ANALOGIN|GPIO_MODE_INPUT|GPIO_PIN10)
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/* TIMERS */
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#if defined(CONFIG_STM32_TIM1_FULL_REMAP)
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@ -68,6 +68,58 @@
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* pins in this file.
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*/
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/* ADC */
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#define GPIO_ADC1_IN0 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN0)
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#define GPIO_ADC1_IN1 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN1)
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#define GPIO_ADC1_IN2 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN2)
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#define GPIO_ADC1_IN3 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN3)
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#define GPIO_ADC1_IN4 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN4)
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#define GPIO_ADC1_IN5 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN5)
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#define GPIO_ADC1_IN6 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN6)
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#define GPIO_ADC1_IN7 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN7)
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#define GPIO_ADC1_IN8 (GPIO_ANALOG|GPIO_PORTB|GPIO_PIN0)
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#define GPIO_ADC1_IN9 (GPIO_ANALOG|GPIO_PORTB|GPIO_PIN1)
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#define GPIO_ADC1_IN10 (GPIO_ANALOG|GPIO_PORTC|GPIO_PIN0)
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#define GPIO_ADC1_IN11 (GPIO_ANALOG|GPIO_PORTC|GPIO_PIN1)
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#define GPIO_ADC1_IN12 (GPIO_ANALOG|GPIO_PORTC|GPIO_PIN2)
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#define GPIO_ADC1_IN13 (GPIO_ANALOG|GPIO_PORTC|GPIO_PIN3)
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#define GPIO_ADC1_IN14 (GPIO_ANALOG|GPIO_PORTC|GPIO_PIN4)
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#define GPIO_ADC1_IN15 (GPIO_ANALOG|GPIO_PORTC|GPIO_PIN5)
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#define GPIO_ADC2_IN0 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN0)
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#define GPIO_ADC2_IN1 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN1)
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#define GPIO_ADC2_IN2 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN2)
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#define GPIO_ADC2_IN3 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN3)
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#define GPIO_ADC2_IN4 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN4)
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#define GPIO_ADC2_IN5 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN5)
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#define GPIO_ADC2_IN6 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN6)
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#define GPIO_ADC2_IN7 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN7)
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#define GPIO_ADC2_IN8 (GPIO_ANALOG|GPIO_PORTB|GPIO_PIN0)
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#define GPIO_ADC2_IN9 (GPIO_ANALOG|GPIO_PORTB|GPIO_PIN1)
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#define GPIO_ADC2_IN10 (GPIO_ANALOG|GPIO_PORTC|GPIO_PIN0)
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#define GPIO_ADC2_IN11 (GPIO_ANALOG|GPIO_PORTC|GPIO_PIN1)
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#define GPIO_ADC2_IN12 (GPIO_ANALOG|GPIO_PORTC|GPIO_PIN2)
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#define GPIO_ADC2_IN13 (GPIO_ANALOG|GPIO_PORTC|GPIO_PIN3)
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#define GPIO_ADC2_IN14 (GPIO_ANALOG|GPIO_PORTC|GPIO_PIN4)
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#define GPIO_ADC2_IN15 (GPIO_ANALOG|GPIO_PORTC|GPIO_PIN5)
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#define GPIO_ADC3_IN0 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN0)
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#define GPIO_ADC3_IN1 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN1)
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#define GPIO_ADC3_IN2 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN2)
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#define GPIO_ADC3_IN3 (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN3)
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#define GPIO_ADC3_IN4 (GPIO_ANALOG|GPIO_PORTF|GPIO_PIN6)
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#define GPIO_ADC3_IN5 (GPIO_ANALOG|GPIO_PORTF|GPIO_PIN7)
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#define GPIO_ADC3_IN6 (GPIO_ANALOG|GPIO_PORTF|GPIO_PIN8)
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#define GPIO_ADC3_IN7 (GPIO_ANALOG|GPIO_PORT |GPIO_PIN9)
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#define GPIO_ADC3_IN9 (GPIO_ANALOG|GPIO_PORTF|GPIO_PIN3)
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#define GPIO_ADC3_IN10 (GPIO_ANALOG|GPIO_PORTC|GPIO_PIN0)
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#define GPIO_ADC3_IN11 (GPIO_ANALOG|GPIO_PORTC|GPIO_PIN1)
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#define GPIO_ADC3_IN12 (GPIO_ANALOG|GPIO_PORTC|GPIO_PIN2)
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#define GPIO_ADC3_IN13 (GPIO_ANALOG|GPIO_PORTC|GPIO_PIN3)
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#define GPIO_ADC3_IN14 (GPIO_ANALOG|GPIO_PORTF|GPIO_PIN4)
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#define GPIO_ADC3_IN15 (GPIO_ANALOG|GPIO_PORTF|GPIO_PIN5)
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/* CAN */
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#define GPIO_CAN1_RX_1 (GPIO_ALT|GPIO_AF9|GPIO_PORTA|GPIO_PIN11)
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@ -84,6 +136,15 @@
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#define GPIO_CAN2_TX_1 (GPIO_ALT|GPIO_AF9|GPIO_PORTB|GPIO_PIN13)
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#define GPIO_CAN2_TX_2 (GPIO_ALT|GPIO_AF9|GPIO_PORTB|GPIO_PIN6)
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/* DAC -" Once the DAC channelx is enabled, the corresponding GPIO pin
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* (PA4 or PA5) is automatically connected to the analog converter output
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* (DAC_OUTx). In order to avoid parasitic consumption, the PA4 or PA5 pin
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* should first be configured to analog (AIN)".
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*/
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#define GPIO_DAC1_OUT (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN4)
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#define GPIO_DAC2_OUT (GPIO_ANALOG|GPIO_PORTA|GPIO_PIN5)
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/* Digital Camera Interface (DCMI) */
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#define GPIO_DCMI_D0_1 (GPIO_ALT|GPIO_AF13|GPIO_PORTA|GPIO_PIN9)
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@ -61,9 +61,8 @@
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#ifdef CONFIG_DAC
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/****************************************************************************
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* Private Types
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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/* Up to 2 DAC interfaces are supported */
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@ -77,9 +76,33 @@
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#if defined(CONFIG_STM32_DAC1) || defined(CONFIG_STM32_DAC2)
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/* This structure represents the internal state of the single STM32 DAC block */
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struct stm32_dac_s
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{
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uint8_t init : 1; /* True, the DAC block has been initialized */
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};
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/* This structure represents the internal state of one STM32 DAC channel */
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struct stm32_chan_s
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{
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uint8_t inuse : 1; /* True, the driver is in use and not available */
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uint8_t intf; /* DAC zero-based interface number (0 or 1) */
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/* DAC Register access */
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static uint32_t dac_getreg(struct stm32_chan_s *chan, int offset);
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static void dac_putreg(struct stm32_chan_s *chan, int offset, uint32_t value);
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/* Interrupt handler */
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#ifdef CONFIG_STM32_STM32F40XX
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@ -96,6 +119,11 @@ static int dac_send(FAR struct dac_dev_s *dev, FAR struct dac_msg_s *msg);
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static int dac_ioctl(FAR struct dac_dev_s *dev, int cmd, unsigned long arg);
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static int dac_interrupt(int irq, void *context);
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/* Initialization */
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static int dac_chaninit(struct stm32_chan_s *chan);
|
||||
static int dac_blockinit(void);
|
||||
|
||||
/****************************************************************************
|
||||
* Private Data
|
||||
****************************************************************************/
|
||||
@ -110,15 +138,78 @@ static const struct dac_ops_s g_dacops =
|
||||
.ao_ioctl = dac_ioctl,
|
||||
};
|
||||
|
||||
static struct dac_dev_s g_dacdev =
|
||||
#ifdef CONFIG_STM32_DAC1
|
||||
static struct stm32_chan_s g_dac1priv =
|
||||
{
|
||||
.ad_ops = &g_dacops,
|
||||
.intf = 0;
|
||||
}
|
||||
|
||||
static struct dac_dev_s g_dac1dev =
|
||||
{
|
||||
.ad_ops = &g_dacops,
|
||||
.ad_priv = &g_dac1priv,
|
||||
};
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_STM32_DAC2
|
||||
static struct stm32_chan_s g_dac2priv =
|
||||
{
|
||||
.intf = 1;
|
||||
}
|
||||
|
||||
static struct dac_dev_s g_dac2dev =
|
||||
{
|
||||
.ad_ops = &g_dacops,
|
||||
.ad_priv = &g_dac2priv,
|
||||
};
|
||||
#endif
|
||||
|
||||
static struct stm32_dac_s g_dacblock;
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: dac_getreg
|
||||
*
|
||||
* Description:
|
||||
* Read the value of an DAC register.
|
||||
*
|
||||
* Input Parameters:
|
||||
* chan - A reference to the DAC block status
|
||||
* offset - The offset to the register to read
|
||||
*
|
||||
* Returned Value:
|
||||
* The current contents of the specified register
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static uint32_t dac_getreg(struct stm32_chan_s *chan, int offset)
|
||||
{
|
||||
return getreg32(chan->base + offset);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: dac_getreg
|
||||
*
|
||||
* Description:
|
||||
* Read the value of an DAC register.
|
||||
*
|
||||
* Input Parameters:
|
||||
* chan - A reference to the DAC block status
|
||||
* offset - The offset to the register to read
|
||||
*
|
||||
* Returned Value:
|
||||
* None
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void dac_putreg(struct stm32_chan_s *chan, int offset, uint32_t value)
|
||||
{
|
||||
putreg32(value, chan->base + offset);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: dac_interrupt
|
||||
*
|
||||
@ -129,6 +220,7 @@ static struct dac_dev_s g_dacdev =
|
||||
* Input Parameters:
|
||||
*
|
||||
* Returned Value:
|
||||
* OK
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
@ -143,12 +235,15 @@ static int dac_interrupt(int irq, void *context)
|
||||
* Name: dac_reset
|
||||
*
|
||||
* Description:
|
||||
* Reset the DAC device. Called early to initialize the hardware. This
|
||||
* Reset the DAC channel. Called early to initialize the hardware. This
|
||||
* is called, before dac_setup() and on error conditions.
|
||||
*
|
||||
* NOTE: DAC reset will reset both DAC channels!
|
||||
*
|
||||
* Input Parameters:
|
||||
*
|
||||
* Returned Value:
|
||||
* None
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
@ -156,11 +251,11 @@ static void dac_reset(FAR struct dac_dev_s *dev)
|
||||
{
|
||||
irqstate_t flags;
|
||||
uint32_t regval;
|
||||
|
||||
flags = irqsave();
|
||||
|
||||
# warning "Missing logic"
|
||||
|
||||
flags = irqsave();
|
||||
|
||||
#warning "Missing logic"
|
||||
|
||||
irqrestore(flags);
|
||||
}
|
||||
|
||||
@ -176,6 +271,7 @@ static void dac_reset(FAR struct dac_dev_s *dev)
|
||||
* Input Parameters:
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero on success; a negated errno value on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
@ -195,6 +291,7 @@ static int dac_setup(FAR struct dac_dev_s *dev)
|
||||
* Input Parameters:
|
||||
*
|
||||
* Returned Value:
|
||||
* None
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
@ -212,6 +309,7 @@ static void dac_shutdown(FAR struct dac_dev_s *dev)
|
||||
* Input Parameters:
|
||||
*
|
||||
* Returned Value:
|
||||
* None
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
@ -229,6 +327,7 @@ static void dac_txint(FAR struct dac_dev_s *dev, bool enable)
|
||||
* Input Parameters:
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero on success; a negated errno value on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
@ -247,6 +346,7 @@ static int dac_send(FAR struct dac_dev_s *dev, FAR struct dac_msg_s *msg)
|
||||
* Input Parameters:
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero on success; a negated errno value on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
@ -255,6 +355,82 @@ static int dac_ioctl(FAR struct dac_dev_s *dev, int cmd, unsigned long arg)
|
||||
return -ENOTTY;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: dac_ioctl
|
||||
*
|
||||
* Description:
|
||||
* All ioctl calls will be routed through this method.
|
||||
*
|
||||
* Input Parameters:
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero on success; a negated errno value on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int dac_chaninit(struct stm32_chan_s *chan)
|
||||
{
|
||||
/* Is the selected channel already in-use? */
|
||||
|
||||
if (chan->inuse)
|
||||
{
|
||||
/* Yes.. then return EBUSY */
|
||||
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
/* Mark the DAC channel "in-use" */
|
||||
|
||||
chan->inuse = 1;
|
||||
return OK;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: dac_ioctl
|
||||
*
|
||||
* Description:
|
||||
* All ioctl calls will be routed through this method.
|
||||
*
|
||||
* Input Parameters:
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero on success; a negated errno value on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int dac_blockinit(void)
|
||||
{
|
||||
irqstate_t flags;
|
||||
uint32_t regval;
|
||||
|
||||
/* Has the DMA block already been initialized? */
|
||||
|
||||
if (g_dacblock.init)
|
||||
{
|
||||
/* Yes.. then return success We only have to do this once */
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
/* Put the entire DAC block in reset state */
|
||||
|
||||
flags = irqsave();
|
||||
regval = getreg32(STM32_RCC_APB1RSTR);
|
||||
regval |= RCC_APB1RSTR_DACRST
|
||||
putreg32(regval, STM32_RCC_APB1RSTR);
|
||||
|
||||
/* Take the DAC out of reset state */
|
||||
|
||||
regval &= ~RCC_APB1RSTR_DACRST
|
||||
putreg32(regval, STM32_RCC_APB1RSTR);
|
||||
irqrestore(flags);
|
||||
|
||||
/* Mark the DAC block as initialized */
|
||||
|
||||
g_dacblock.init = 1;
|
||||
return OK;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
@ -263,19 +439,67 @@ static int dac_ioctl(FAR struct dac_dev_s *dev, int cmd, unsigned long arg)
|
||||
* Name: stm32_dacinitialize
|
||||
*
|
||||
* Description:
|
||||
* Initialize the DAC
|
||||
* Initialize the DAC.
|
||||
*
|
||||
* Input Parameters:
|
||||
* intf - The DAC interface number.
|
||||
*
|
||||
* Returned Value:
|
||||
* Valid dac device structure reference on succcess; a NULL on failure
|
||||
* Valid dac device structure reference on succcess; a NULL on failure.
|
||||
*
|
||||
* Assumptions:
|
||||
* 1. Clock to the DAC block has enabled,
|
||||
* 2. Board-specific logic has already configured
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
FAR struct dac_dev_s *stm32_dacinitialize(int intf)
|
||||
{
|
||||
return &g_dacdev;
|
||||
FAR struct dac_dev_s *dev;
|
||||
FAR struct stm32_chan_s *chan;
|
||||
int ret;
|
||||
|
||||
#ifdef CONFIG_STM32_DAC1
|
||||
if (intf == 1)
|
||||
{
|
||||
avdbg("DAC1 Selected\n");
|
||||
dev = &g_dacdev1;
|
||||
}
|
||||
else
|
||||
#endif
|
||||
#ifdef CONFIG_STM32_DAC2
|
||||
if (intf == 2)
|
||||
{
|
||||
avdbg("DAC2 Selected\n");
|
||||
dev = &g_dac2dev;
|
||||
}
|
||||
else
|
||||
#endif
|
||||
{
|
||||
adbg("No such DAC interface: %d\n", intf);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Make sure that the DAC block has been initialized */
|
||||
|
||||
ret = dac_blockinit();
|
||||
if (ret < 0)
|
||||
{
|
||||
adbg("Failed to initialize the DAC block: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Configure the selected DAC channel */
|
||||
|
||||
chan = dev->ad_priv;
|
||||
ret = dac_chaninit(chan);
|
||||
if (ret < 0)
|
||||
{
|
||||
adbg("Failed to initialize DAC channel %d: %d\n", intf, ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
return dev;
|
||||
}
|
||||
|
||||
#endif /* CONFIG_STM32_DAC1 || CONFIG_STM32_DAC2 */
|
||||
|
||||
@ -298,7 +298,7 @@ static inline void rcc_enableapb1(void)
|
||||
regval |= RCC_APB1ENR_PWREN;
|
||||
#endif
|
||||
|
||||
#if CONFIG_STM32_DAC
|
||||
#ifdefined (CONFIG_STM32_DAC1) || defined(CONFIG_STM32_DAC2)
|
||||
/* DAC interface clock enable */
|
||||
|
||||
regval |= RCC_APB1ENR_DACEN;
|
||||
|
||||
@ -431,7 +431,7 @@ static inline void rcc_enableapb1(void)
|
||||
|
||||
regval |= RCC_APB1ENR_PWREN;
|
||||
|
||||
#if CONFIG_STM32_DAC
|
||||
#ifdefined (CONFIG_STM32_DAC1) || defined(CONFIG_STM32_DAC2)
|
||||
/* DAC interface clock enable */
|
||||
|
||||
regval |= RCC_APB1ENR_DACEN;
|
||||
|
||||
@ -296,17 +296,17 @@ static ssize_t dac_write(FAR struct file *filep, FAR const char *buffer, size_t
|
||||
*/
|
||||
|
||||
if (buflen % 5 ==0 )
|
||||
msglen=5;
|
||||
msglen=5;
|
||||
else if (buflen % 4 ==0 )
|
||||
msglen=4;
|
||||
msglen=4;
|
||||
else if (buflen % 3 ==0 )
|
||||
msglen=3;
|
||||
msglen=3;
|
||||
else if (buflen % 2 ==0 )
|
||||
msglen=2;
|
||||
msglen=2;
|
||||
else if (buflen == 1)
|
||||
msglen=1;
|
||||
msglen=1;
|
||||
else
|
||||
msglen=5;
|
||||
msglen=5;
|
||||
|
||||
while ((buflen - nsent) >= msglen )
|
||||
{
|
||||
@ -369,35 +369,36 @@ static ssize_t dac_write(FAR struct file *filep, FAR const char *buffer, size_t
|
||||
/* We get here if there is space at the end of the FIFO. Add the new
|
||||
* CAN message at the tail of the FIFO.
|
||||
*/
|
||||
if(msglen==5)
|
||||
|
||||
if (msglen==5)
|
||||
{
|
||||
msg = (FAR struct dac_msg_s *)&buffer[nsent];
|
||||
memcpy(&fifo->af_buffer[fifo->af_tail], msg, msglen);
|
||||
msg = (FAR struct dac_msg_s *)&buffer[nsent];
|
||||
memcpy(&fifo->af_buffer[fifo->af_tail], msg, msglen);
|
||||
}
|
||||
else if(msglen == 4)
|
||||
{
|
||||
fifo->af_buffer[fifo->af_tail].am_channel=buffer[nsent];
|
||||
fifo->af_buffer[fifo->af_tail].am_data=*(uint32_t *)&buffer[nsent];
|
||||
fifo->af_buffer[fifo->af_tail].am_data&=0xffffff00;
|
||||
}
|
||||
fifo->af_buffer[fifo->af_tail].am_channel=buffer[nsent];
|
||||
fifo->af_buffer[fifo->af_tail].am_data=*(uint32_t *)&buffer[nsent];
|
||||
fifo->af_buffer[fifo->af_tail].am_data&=0xffffff00;
|
||||
}
|
||||
else if(msglen == 3)
|
||||
{
|
||||
fifo->af_buffer[fifo->af_tail].am_channel=buffer[nsent];
|
||||
fifo->af_buffer[fifo->af_tail].am_data=(*(uint16_t *)&buffer[nsent+1]);
|
||||
fifo->af_buffer[fifo->af_tail].am_data<<=16;
|
||||
}
|
||||
fifo->af_buffer[fifo->af_tail].am_channel=buffer[nsent];
|
||||
fifo->af_buffer[fifo->af_tail].am_data=(*(uint16_t *)&buffer[nsent+1]);
|
||||
fifo->af_buffer[fifo->af_tail].am_data<<=16;
|
||||
}
|
||||
else if(msglen == 2)
|
||||
{
|
||||
fifo->af_buffer[fifo->af_tail].am_channel=0;
|
||||
fifo->af_buffer[fifo->af_tail].am_data=(*(uint16_t *)&buffer[nsent]);
|
||||
fifo->af_buffer[fifo->af_tail].am_data<<=16;
|
||||
}
|
||||
fifo->af_buffer[fifo->af_tail].am_channel=0;
|
||||
fifo->af_buffer[fifo->af_tail].am_data=(*(uint16_t *)&buffer[nsent]);
|
||||
fifo->af_buffer[fifo->af_tail].am_data<<=16;
|
||||
}
|
||||
else if(msglen == 1)
|
||||
{
|
||||
fifo->af_buffer[fifo->af_tail].am_channel=0;
|
||||
fifo->af_buffer[fifo->af_tail].am_data=buffer[nsent];
|
||||
fifo->af_buffer[fifo->af_tail].am_data<<=24;
|
||||
}
|
||||
fifo->af_buffer[fifo->af_tail].am_channel=0;
|
||||
fifo->af_buffer[fifo->af_tail].am_data=buffer[nsent];
|
||||
fifo->af_buffer[fifo->af_tail].am_data<<=24;
|
||||
}
|
||||
/* Increment the tail of the circular buffer */
|
||||
|
||||
fifo->af_tail = nexttail;
|
||||
|
||||
@ -6,6 +6,7 @@
|
||||
* History: 0.1 2011-08-04 initial version
|
||||
*
|
||||
* Derived from include/nuttx/can.h
|
||||
*
|
||||
* Copyright (C) 2008, 2009 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
||||
*
|
||||
@ -71,10 +72,11 @@
|
||||
/************************************************************************************
|
||||
* Public Types
|
||||
************************************************************************************/
|
||||
|
||||
struct dac_msg_s
|
||||
{
|
||||
uint8_t am_channel; /* The 8-bit DAC Channel */
|
||||
int32_t am_data; /* DAC convert result (4 bytes) */
|
||||
uint8_t am_channel; /* The 8-bit DAC Channel */
|
||||
int32_t am_data; /* DAC convert result (4 bytes) */
|
||||
};
|
||||
|
||||
struct dac_fifo_s
|
||||
@ -138,12 +140,12 @@ struct dac_ops_s
|
||||
|
||||
struct dac_dev_s
|
||||
{
|
||||
uint8_t ad_ocount; /* The number of times the device has been opened */
|
||||
uint8_t ad_nchannel; /* Number of dac channel */
|
||||
sem_t ad_closesem; /* Locks out new opens while close is in progress */
|
||||
struct dac_fifo_s ad_xmit; /* Describes receive FIFO */
|
||||
const struct dac_ops_s *ad_ops; /* Arch-specific operations */
|
||||
void *ad_priv; /* Used by the arch-specific logic */
|
||||
uint8_t ad_ocount; /* The number of times the device has been opened */
|
||||
uint8_t ad_nchannel; /* Number of dac channel */
|
||||
sem_t ad_closesem; /* Locks out new opens while close is in progress */
|
||||
struct dac_fifo_s ad_xmit; /* Describes receive FIFO */
|
||||
const struct dac_ops_s *ad_ops; /* Arch-specific operations */
|
||||
void *ad_priv; /* Used by the arch-specific logic */
|
||||
};
|
||||
|
||||
/************************************************************************************
|
||||
@ -157,12 +159,21 @@ struct dac_dev_s
|
||||
#if defined(__cplusplus)
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
/************************************************************************************
|
||||
* Name: dac_register
|
||||
*
|
||||
* Description:
|
||||
* Register a dac driver.
|
||||
*
|
||||
* Input Parameters:
|
||||
* path - The full path to the DAC device to be registered. This could be, as an
|
||||
* example, "/dev/dac0"
|
||||
* dev - An instance of the device-specific DAC interface
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero on success; A negated errno value on failure.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
int dac_register(FAR const char *path, FAR struct dac_dev_s *dev);
|
||||
@ -173,14 +184,26 @@ int dac_register(FAR const char *path, FAR struct dac_dev_s *dev);
|
||||
* Description:
|
||||
* Called from the DAC interrupt handler at the completion of a send operation.
|
||||
*
|
||||
* Input Parameters:
|
||||
* dev - An instance of the device-specific DAC interface
|
||||
*
|
||||
* Return:
|
||||
* OK on success; a negated errno on failure.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
int dac_txdone(FAR struct dac_dev_s *dev);
|
||||
|
||||
/************************************************************************************
|
||||
* DAC Initialization functions
|
||||
*
|
||||
* Architecture-specific versions will have prototypes in architect-specific header
|
||||
* files. Common DAC implementations in drivers/analog will have prototypes listed
|
||||
* below.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
FAR struct dac_dev_s *up_ad5410initialize(FAR struct spi_dev_s *spi, unsigned int devno);
|
||||
FAR struct dac_dev_s *up_dacinitialize();
|
||||
|
||||
#if defined(__cplusplus)
|
||||
}
|
||||
|
||||
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Reference in New Issue
Block a user