Initial fleshing out of the STM32 quadrature encoder driver

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4392 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2012-02-14 22:18:53 +00:00
parent 07f51374ae
commit b1e175e7a4
2 changed files with 357 additions and 46 deletions

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@ -452,19 +452,19 @@
#define GPIO_TIM1_BKIN_1 (GPIO_ALT|GPIO_AF1|GPIO_PORTA|GPIO_PIN6)
#define GPIO_TIM1_BKIN_2 (GPIO_ALT|GPIO_AF1|GPIO_PORTB|GPIO_PIN12)
#define GPIO_TIM1_BKIN_3 (GPIO_ALT|GPIO_AF1|GPIO_PORTE|GPIO_PIN15)
#define GPIO_TIM1_CH1N_1 (GPIO_ALT|GPIO_AF1|GPIO_PORTA|GPIO_PIN7)
#define GPIO_TIM1_CH1N_2 (GPIO_ALT|GPIO_AF1|GPIO_PORTB|GPIO_PIN13)
#define GPIO_TIM1_CH1N_3 (GPIO_ALT|GPIO_AF1|GPIO_PORTE|GPIO_PIN8)
#define GPIO_TIM1_CH1IN_1 (GPIO_ALT|GPIO_AF1|GPIO_PORTA|GPIO_PIN7)
#define GPIO_TIM1_CH1IN_2 (GPIO_ALT|GPIO_AF1|GPIO_PORTB|GPIO_PIN13)
#define GPIO_TIM1_CH1IN_3 (GPIO_ALT|GPIO_AF1|GPIO_PORTE|GPIO_PIN8)
#define GPIO_TIM1_CH1OUT_1 (GPIO_ALT|GPIO_AF1|GPIO_PORTA|GPIO_PIN8)
#define GPIO_TIM1_CH1OUT_2 (GPIO_ALT|GPIO_AF1|GPIO_PORTE|GPIO_PIN9)
#define GPIO_TIM1_CH2N_1 (GPIO_ALT|GPIO_AF1|GPIO_PORTB|GPIO_PIN0)
#define GPIO_TIM1_CH2N_2 (GPIO_ALT|GPIO_AF1|GPIO_PORTB|GPIO_PIN14)
#define GPIO_TIM1_CH2N_3 (GPIO_ALT|GPIO_AF1|GPIO_PORTE|GPIO_PIN10)
#define GPIO_TIM1_CH2IN_1 (GPIO_ALT|GPIO_AF1|GPIO_PORTB|GPIO_PIN0)
#define GPIO_TIM1_CH2IN_2 (GPIO_ALT|GPIO_AF1|GPIO_PORTB|GPIO_PIN14)
#define GPIO_TIM1_CH2IN_3 (GPIO_ALT|GPIO_AF1|GPIO_PORTE|GPIO_PIN10)
#define GPIO_TIM1_CH2OUT_1 (GPIO_ALT|GPIO_AF1|GPIO_PORTA|GPIO_PIN9)
#define GPIO_TIM1_CH2OUT_2 (GPIO_ALT|GPIO_AF1|GPIO_PORTE|GPIO_PIN11)
#define GPIO_TIM1_CH3N_1 (GPIO_ALT|GPIO_AF1|GPIO_PORTB|GPIO_PIN1)
#define GPIO_TIM1_CH3N_2 (GPIO_ALT|GPIO_AF1|GPIO_PORTC|GPIO_PIN15)
#define GPIO_TIM1_CH3N_3 (GPIO_ALT|GPIO_AF1|GPIO_PORTE|GPIO_PIN12)
#define GPIO_TIM1_CH3IN_1 (GPIO_ALT|GPIO_AF1|GPIO_PORTB|GPIO_PIN1)
#define GPIO_TIM1_CH3IN_2 (GPIO_ALT|GPIO_AF1|GPIO_PORTC|GPIO_PIN15)
#define GPIO_TIM1_CH3IN_3 (GPIO_ALT|GPIO_AF1|GPIO_PORTE|GPIO_PIN12)
#define GPIO_TIM1_CH3OUT_1 (GPIO_ALT|GPIO_AF1|GPIO_PORTA|GPIO_PIN10)
#define GPIO_TIM1_CH3OUT_2 (GPIO_ALT|GPIO_AF1|GPIO_PORTE|GPIO_PIN13)
#define GPIO_TIM1_CH4OUT_1 (GPIO_ALT|GPIO_AF1|GPIO_PORTA|GPIO_PIN11)
@ -519,19 +519,19 @@
#define GPIO_TIM8_BKIN_1 (GPIO_ALT|GPIO_AF3|GPIO_PORTA|GPIO_PIN6)
#define GPIO_TIM8_BKIN_2 (GPIO_ALT|GPIO_AF3|GPIO_PORTI|GPIO_PIN4)
#define GPIO_TIM8_CH1N_1 (GPIO_ALT|GPIO_AF3|GPIO_PORTA|GPIO_PIN5)
#define GPIO_TIM8_CH1N_2 (GPIO_ALT|GPIO_AF3|GPIO_PORTA|GPIO_PIN7)
#define GPIO_TIM8_CH1N_3 (GPIO_ALT|GPIO_AF3|GPIO_PORTH|GPIO_PIN13)
#define GPIO_TIM8_CH1IN_1 (GPIO_ALT|GPIO_AF3|GPIO_PORTA|GPIO_PIN5)
#define GPIO_TIM8_CH1IN_2 (GPIO_ALT|GPIO_AF3|GPIO_PORTA|GPIO_PIN7)
#define GPIO_TIM8_CH1IN_3 (GPIO_ALT|GPIO_AF3|GPIO_PORTH|GPIO_PIN13)
#define GPIO_TIM8_CH1OUT_1 (GPIO_ALT|GPIO_AF3|GPIO_PORTC|GPIO_PIN6)
#define GPIO_TIM8_CH1OUT_2 (GPIO_ALT|GPIO_AF3|GPIO_PORTI|GPIO_PIN5)
#define GPIO_TIM8_CH2OUT_1 (GPIO_ALT|GPIO_AF3|GPIO_PORTC|GPIO_PIN7)
#define GPIO_TIM8_CH2OUT_2 (GPIO_ALT|GPIO_AF3|GPIO_PORTI|GPIO_PIN6)
#define GPIO_TIM8_CH2N_1 (GPIO_ALT|GPIO_AF3|GPIO_PORTB|GPIO_PIN0)
#define GPIO_TIM8_CH2N_2 (GPIO_ALT|GPIO_AF3|GPIO_PORTB|GPIO_PIN14)
#define GPIO_TIM8_CH2N_3 (GPIO_ALT|GPIO_AF3|GPIO_PORTH|GPIO_PIN14)
#define GPIO_TIM8_CH3N_1 (GPIO_ALT|GPIO_AF3|GPIO_PORTB|GPIO_PIN1)
#define GPIO_TIM8_CH3N_2 (GPIO_ALT|GPIO_AF3|GPIO_PORTC|GPIO_PIN15)
#define GPIO_TIM8_CH3N_3 (GPIO_ALT|GPIO_AF3|GPIO_PORTH|GPIO_PIN15)
#define GPIO_TIM8_CH2IN_1 (GPIO_ALT|GPIO_AF3|GPIO_PORTB|GPIO_PIN0)
#define GPIO_TIM8_CH2IN_2 (GPIO_ALT|GPIO_AF3|GPIO_PORTB|GPIO_PIN14)
#define GPIO_TIM8_CH2IN_3 (GPIO_ALT|GPIO_AF3|GPIO_PORTH|GPIO_PIN14)
#define GPIO_TIM8_CH3IN_1 (GPIO_ALT|GPIO_AF3|GPIO_PORTB|GPIO_PIN1)
#define GPIO_TIM8_CH3IN_2 (GPIO_ALT|GPIO_AF3|GPIO_PORTC|GPIO_PIN15)
#define GPIO_TIM8_CH3IN_3 (GPIO_ALT|GPIO_AF3|GPIO_PORTH|GPIO_PIN15)
#define GPIO_TIM8_CH3OUT_1 (GPIO_ALT|GPIO_AF3|GPIO_PORTC|GPIO_PIN8)
#define GPIO_TIM8_CH3OUT_2 (GPIO_ALT|GPIO_AF3|GPIO_PORTI|GPIO_PIN7)
#define GPIO_TIM8_CH4OUT_1 (GPIO_ALT|GPIO_AF3|GPIO_PORTC|GPIO_PIN9)

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@ -40,7 +40,9 @@
#include <nuttx/config.h>
#include <stdint.h>
#include <assert.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/arch.h>
#include <nuttx/irq.h>
@ -99,6 +101,13 @@ struct stm32_qeconfig_s
{
uint8_t timid; /* Timer ID {1,2,3,4,5,8} */
uint8_t irq; /* Timer update IRQ */
#ifdef CONFIG_STM32_STM32F40XX
uint32_t ti1cfg; /* TI1 input pin configuration (20-bit encoding) */
uint32_t ti2cfg; /* TI2 input pin configuration (20-bit encoding) */
#else
uint16_t ti1cfg; /* TI1 input pin configuration (16-bit encoding) */
uint16_t ti2cfg; /* TI2 input pin configuration (16-bit encoding) */
#endif
uint32_t base; /* Register base address */
xcpt_t handler; /* Interrupt handler for this IRQ */
};
@ -142,22 +151,22 @@ static FAR struct stm32_lowerhalf_s *stm32_tim2lower(int tim);
/* Interrupt handling */
static int stm32_interrupt(FAR struct stm32_lowerhalf_s *priv);
#ifdef CONFIG_STM32_TIM1
#ifdef CONFIG_STM32_TIM1_QE
static int stm32_tim1interrupt(int irq, FAR void *context);
#endif
#ifdef CONFIG_STM32_TIM2
#ifdef CONFIG_STM32_TIM2_QE
static int stm32_tim2interrupt(int irq, FAR void *context);
#endif
#ifdef CONFIG_STM32_TIM3
#ifdef CONFIG_STM32_TIM3_QE
static int stm32_tim3interrupt(int irq, FAR void *context);
#endif
#ifdef CONFIG_STM32_TIM4
#ifdef CONFIG_STM32_TIM4_QE
static int stm32_tim4interrupt(int irq, FAR void *context);
#endif
#ifdef CONFIG_STM32_TIM5
#ifdef CONFIG_STM32_TIM5_QE
static int stm32_tim5interrupt(int irq, FAR void *context);
#endif
#ifdef CONFIG_STM32_TIM8
#ifdef CONFIG_STM32_TIM8_QE
static int stm32_tim8interrupt(int irq, FAR void *context);
#endif
@ -185,12 +194,14 @@ static const struct qe_ops_s g_qecallbacks =
/* Per-timer state structures */
#ifdef CONFIG_STM32_TIM1
#ifdef CONFIG_STM32_TIM1_QE
static const struct stm32_qeconfig_s g_tim1config =
{
.timid = 1,
.irq = STM32_IRQ_TIM1UP,
.base = STM32_TIM1_BASE,
.ti1cfg = GPIO_TIM1_CH1IN,
.ti2cfg = GPIO_TIM1_CH2IN,
.handler = stm32_tim1interrupt,
};
@ -202,12 +213,15 @@ static struct stm32_lowerhalf_s g_tim1lower =
};
#endif
#ifdef CONFIG_STM32_TIM2
#ifdef CONFIG_STM32_TIM2_QE
static const struct stm32_qeconfig_s g_tim2config =
{
.timid = 2,
.irq = STM32_IRQ_TIM2,
.base = STM32_TIM2_BASE,
.ti1cfg = GPIO_TIM2_CH1IN,
.ti2cfg = GPIO_TIM2_CH2IN,
.handler = stm32_tim2interrupt,
};
@ -219,12 +233,15 @@ static struct stm32_lowerhalf_s g_tim2lower =
};
#endif
#ifdef CONFIG_STM32_TIM3
#ifdef CONFIG_STM32_TIM3_QE
static const struct stm32_qeconfig_s g_tim3config =
{
.timid = 3,
.irq = STM32_IRQ_TIM3,
.base = STM32_TIM3_BASE,
.ti1cfg = GPIO_TIM3_CH1IN,
.ti2cfg = GPIO_TIM3_CH2IN,
.handler = stm32_tim3interrupt,
};
@ -236,12 +253,15 @@ static struct stm32_lowerhalf_s g_tim3lower =
};
#endif
#ifdef CONFIG_STM32_TIM4
#ifdef CONFIG_STM32_TIM4_QE
static const struct stm32_qeconfig_s g_tim4config =
{
.timid = 4,
.irq = STM32_IRQ_TIM4,
.base = STM32_TIM4_BASE,
.ti1cfg = GPIO_TIM4_CH1IN,
.ti2cfg = GPIO_TIM4_CH2IN,
.handler = stm32_tim4interrupt,
};
@ -253,12 +273,15 @@ static struct stm32_lowerhalf_s g_tim4lower =
};
#endif
#ifdef CONFIG_STM32_TIM5
#ifdef CONFIG_STM32_TIM5_QE
static const struct stm32_qeconfig_s g_tim5config =
{
.timid = 5,
.irq = STM32_IRQ_TIM5,
.base = STM32_TIM5_BASE,
.ti1cfg = GPIO_TIM5_CH1IN,
.ti2cfg = GPIO_TIM5_CH2IN,
.handler = stm32_tim5interrupt,
};
@ -270,12 +293,15 @@ static struct stm32_lowerhalf_s g_tim5lower =
};
#endif
#ifdef CONFIG_STM32_TIM8
#ifdef CONFIG_STM32_TIM8_QE
static const struct stm32_qeconfig_s g_tim8config =
{
.timid = 8,
.irq = STM32_IRQ_TIM8UP,
.base = STM32_TIM8_BASE,
.ti1cfg = GPIO_TIM8_CH1IN,
.ti2cfg = GPIO_TIM8_CH2IN,
.handler = stm32_tim8interrupt,
};
@ -337,7 +363,7 @@ static void stm32_putreg16(struct stm32_lowerhalf_s *priv, int offset, uint16_t
* Description:
* Read the value of a 32-bit timer register. This applies only for the STM32 F4
* 32-bit registers (CNT, ARR, CRR1-4) in the 32-bit timers TIM2-5 (but works OK
* with the 16-bit TIM1,8 and F1 registers).
* with the 16-bit TIM1,8 and F1 registers as well).
*
* Input Parameters:
* priv - A reference to the lower half status
@ -444,26 +470,26 @@ static FAR struct stm32_lowerhalf_s *stm32_tim2lower(int tim)
{
switch (tim)
{
#ifdef CONFIG_STM32_TIM1
#ifdef CONFIG_STM32_TIM1_QE
case 1:
return &g_tim1lower;
#endif
#ifdef CONFIG_STM32_TIM2
#ifdef CONFIG_STM32_TIM2_QE
case 2:
return &g_tim2lower;
#endif
#ifdef CONFIG_STM32_TIM3
#ifdef CONFIG_STM32_TIM3_QE
case 3:
#endif
#ifdef CONFIG_STM32_TIM4
#ifdef CONFIG_STM32_TIM4_QE
case 4:
return &g_tim4lower;
#endif
#ifdef CONFIG_STM32_TIM5
#ifdef CONFIG_STM32_TIM5_QE
case 5:
return &g_tim5lower;
#endif
#ifdef CONFIG_STM32_TIM8
#ifdef CONFIG_STM32_TIM8_QE
case 8:
return &g_tim8lower;
#endif
@ -518,42 +544,42 @@ static int stm32_interrupt(FAR struct stm32_lowerhalf_s *priv)
*
************************************************************************************/
#ifdef CONFIG_STM32_TIM1
#ifdef CONFIG_STM32_TIM1_QE
static int stm32_tim1interrupt(int irq, FAR void *context)
{
return stm32_interrupt(&g_tim1lower);
}
#endif
#ifdef CONFIG_STM32_TIM2
#ifdef CONFIG_STM32_TIM2_QE
static int stm32_tim2interrupt(int irq, FAR void *context)
{
return stm32_interrupt(&g_tim2lower);
}
#endif
#ifdef CONFIG_STM32_TIM3
#ifdef CONFIG_STM32_TIM3_QE
static int stm32_tim3interrupt(int irq, FAR void *context)
{
return stm32_interrupt(&g_tim3lower);
}
#endif
#ifdef CONFIG_STM32_TIM4
#ifdef CONFIG_STM32_TIM4_QE
static int stm32_tim4interrupt(int irq, FAR void *context)
{
return stm32_interrupt(&g_tim4lower);
}
#endif
#ifdef CONFIG_STM32_TIM5
#ifdef CONFIG_STM32_TIM5_QE
static int stm32_tim5interrupt(int irq, FAR void *context)
{
return stm32_interrupt(&g_tim5lower);
}
#endif
#ifdef CONFIG_STM32_TIM8
#ifdef CONFIG_STM32_TIM8_QE
static int stm32_tim8interrupt(int irq, FAR void *context)
{
return stm32_interrupt(&g_tim8lower);
@ -572,8 +598,179 @@ static int stm32_tim8interrupt(int irq, FAR void *context)
static int stm32_setup(FAR struct qe_lowerhalf_s *lower)
{
#warning "Missing logic"
return -ENOSYS;
FAR struct stm32_lowerhalf_s *priv = (FAR struct stm32_lowerhalf_s *)lower;
uint16_t dier;
uint16_t smcr;
uint16_t ccmr1;
uint16_t ccer;
uint16_t cr1;
int ret;
/* NOTE: Clocking should have been enabled in the low-level RCC logic at boot-up */
/* Timer base configuration */
cr1 = stm32_getreg16(priv, STM32_GTIM_CR1_OFFSET);
/* Clear the direction bit (0=count up) and select the Counter Mode (0=Edge aligned)
* (Timers 2-5 and 1-8 only)
*/
cr1 &= ~(GTIM_CR1_DIR | GTIM_CR1_CMS_MASK);
stm32_putreg16(priv, STM32_GTIM_CR1_OFFSET, cr1);
/* Set the Autoreload value */
#warning REVISIT
stm32_putreg32(priv, STM32_GTIM_ARR_OFFSET, 0);
/* Set the Prescaler value */
#warning REVISIT
stm32_putreg16(priv, STM32_GTIM_PSC_OFFSET, 0);
#if defined(CONFIG_STM32_TIM1_QE) || defined(CONFIG_STM32_TIM8_QE)
if (priv->timerid == 1 || priv->timerid == 8)
{
/* Clear the Repetition Counter value */
stm32_putreg16(priv, STM32_ATIM_RCR_OFFSET, 0);
}
#endif
/* Generate an update event to reload the Prescaler
* and the repetition counter(only for TIM1 and TIM8) value immediatly
*/
stm32_putreg16(priv, STM32_GTIM_EGR_OFFSET, GTIM_EGR_UG);
/* GPIO pin configuration */
stm32_configgpio(priv->config->ti1cfg);
stm32_configgpio(priv->config->ti2cfg);
/* Set the encoder Mode 3*/
#warning REVISIT
smcr = stm32_getreg16(priv, STM32_GTIM_SMCR_OFFSET);
smcr &= ~GTIM_SMCR_SMS_MASK;
smcr |= GTIM_SMCR_ENCMD3;
stm32_putreg16(priv, STM32_GTIM_SMCR_OFFSET, smcr);
/* Write to TIM CCER */
stm32_putreg16(priv, STM32_GTIM_CCER_OFFSET, ccer);
/* TI1 Channel Configuration */
/* Disable the Channel 1: Reset the CC1E Bit */
ccer = stm32_getreg16(priv, STM32_GTIM_CCER_OFFSET);
ccer &= ~GTIM_CCER_CC1E;
stm32_putreg16(priv, STM32_GTIM_CCER_OFFSET, ccer);
ccmr1 = stm32_getreg16(priv, STM32_GTIM_CCMR1_OFFSET);
ccer = stm32_getreg16(priv, STM32_GTIM_CCER_OFFSET);
/* Select the Input IC1=TI1 and set the filter fSAMPLING=fDTS/4, N=6 */
ccmr1 &= ~(GTIM_CCMR1_CC1S_MASK|GTIM_CCMR1_IC1F_MASK);
ccmr1 |= GTIM_CCMR_CCS_CCIN1 << GTIM_CCMR1_CC1S_SHIFT;
ccmr1 |= GTIM_CCMR_ICF_FDTSd46 << GTIM_CCMR1_IC1F_SHIFT;
/* Select the Polarity=rising and set the CC1E Bit */
ccer &= ~(GTIM_CCER_CC1P | GTIM_CCER_CC1NP);
ccer |= GTIM_CCER_CC1E;
/* Write to TIM CCMR1 and CCER registers */
stm32_putreg16(priv, STM32_GTIM_CCMR1_OFFSET, ccmr1);
stm32_putreg16(priv, STM32_GTIM_CCER_OFFSET, ccer);
/* Set the Input Capture Prescaler value: Capture performed each time an
* edge is detected on the capture input.
*/
ccmr1 = stm32_getreg16(priv, STM32_GTIM_CCMR1_OFFSET);
ccmr1 &= ~GTIM_CCMR1_IC1PSC_MASK;
ccmr1 |= (GTIM_CCMR_ICPSC_NOPSC << GTIM_CCMR1_IC1PSC_SHIFT);
stm32_putreg16(priv, STM32_GTIM_CCMR1_OFFSET, ccmr1);
/* TI2 Channel Configuration */
/* Disable the Channel 2: Reset the CC2E Bit */
ccer = stm32_getreg16(priv, STM32_GTIM_CCER_OFFSET);
ccer &= ~GTIM_CCER_CC2E;
stm32_putreg16(priv, STM32_GTIM_CCER_OFFSET, ccer);
ccmr1 = stm32_getreg16(priv, STM32_GTIM_CCMR1_OFFSET);
ccer = stm32_getreg16(priv, STM32_GTIM_CCER_OFFSET);
/* Select the Input IC2=TI2 and set the filter fSAMPLING=fDTS/4, N=6 */
ccmr1 &= ~(GTIM_CCMR1_CC2S_MASK|GTIM_CCMR1_IC2F_MASK);
ccmr1 |= GTIM_CCMR_CCS_CCIN1 << GTIM_CCMR1_CC2S_SHIFT;
ccmr1 |= GTIM_CCMR_ICF_FDTSd46 << GTIM_CCMR1_IC2F_SHIFT;
/* Select the Polarity=rising and set the CC2E Bit */
ccer &= ~(GTIM_CCER_CC2P | GTIM_CCER_CC2NP);
ccer |= GTIM_CCER_CC2E;
/* Write to TIM CCMR1 and CCER registers */
stm32_putreg16(priv, STM32_GTIM_CCMR1_OFFSET, ccmr1);
stm32_putreg16(priv, STM32_GTIM_CCER_OFFSET, ccer);
/* Set the Input Capture Prescaler value: Capture performed each time an
* edge is detected on the capture input.
*/
ccmr1 = stm32_getreg16(priv, STM32_GTIM_CCMR1_OFFSET);
ccmr1 &= ~GTIM_CCMR1_IC2PSC_MASK;
ccmr1 |= (GTIM_CCMR_ICPSC_NOPSC << GTIM_CCMR1_IC2PSC_SHIFT);
stm32_putreg16(priv, STM32_GTIM_CCMR1_OFFSET, ccmr1);
/* Disable the update interrupt */
dier = stm32_getreg16(priv, STM32_GTIM_DIER_OFFSET);
dier &= ~GTIM_DIER_UIE;
stm32_putreg16(priv, STM32_GTIM_DIER_OFFSET, dier);
/* Attach the interrupt handler */
ret = irq_attach(priv->config->irq, priv->config->handler);
if (ret < 0)
{
stm32_shutdown(lower);
return ret;
}
/* Enable the update/global interrupt at the NVIC */
up_enable_irq(priv->config->irq);
/* Reset the Update Disable Bit */
cr1 = stm32_getreg16(priv, STM32_GTIM_CR1_OFFSET);
cr1 &= ~GTIM_CR1_UDIS;
stm32_putreg16(priv, STM32_GTIM_CR1_OFFSET, cr1);
/* Reset the URS Bit */
cr1 &= ~GTIM_CR1_URS;
stm32_putreg16(priv, STM32_GTIM_CR1_OFFSET, cr1);
/* Enable the update interrupt */
dier = stm32_getreg16(priv, STM32_GTIM_DIER_OFFSET);
dier |= GTIM_DIER_UIE;
stm32_putreg16(priv, STM32_GTIM_DIER_OFFSET, dier);
/* Enable the TIM Counter */
cr1 = stm32_getreg16(priv, STM32_GTIM_CR1_OFFSET);
cr1 |= GTIM_CR1_CEN;
stm32_putreg16(priv, STM32_GTIM_CR1_OFFSET, cr1);
return OK;
}
/************************************************************************************
@ -588,7 +785,117 @@ static int stm32_setup(FAR struct qe_lowerhalf_s *lower)
static int stm32_shutdown(FAR struct qe_lowerhalf_s *lower)
{
#warning "Missing logic"
FAR struct stm32_lowerhalf_s *priv = (FAR struct stm32_lowerhalf_s *)lower;
irqstate_t flags;
uint32_t regaddr;
uint32_t regval;
uint32_t resetbit;
uint32_t pincfg;
/* Disable the update/global interrupt at the NVIC */
flags = irqsave();
up_disable_irq(priv->config->irq);
/* Detach the interrupt handler */
(void)irq_detach(priv->config->irq);
/* Disable interrupts momentary to stop any ongoing timer processing and
* to prevent any concurrent access to the reset register.
*/
/* Disable further interrupts and stop the timer */
stm32_putreg16(priv, STM32_GTIM_DIER_OFFSET, 0);
stm32_putreg16(priv, STM32_GTIM_SR_OFFSET, 0);
/* Determine which timer to reset */
switch (priv->config->timid)
{
#ifdef CONFIG_STM32_TIM1_PWM
case 1:
regaddr = STM32_RCC_APB2RSTR;
resetbit = RCC_APB2RSTR_TIM1RST;
break;
#endif
#ifdef CONFIG_STM32_TIM2_PWM
case 2:
regaddr = STM32_RCC_APB1RSTR;
resetbit = RCC_APB1RSTR_TIM2RST;
break;
#endif
#ifdef CONFIG_STM32_TIM3_PWM
case 3:
regaddr = STM32_RCC_APB1RSTR;
resetbit = RCC_APB1RSTR_TIM3RST;
break;
#endif
#ifdef CONFIG_STM32_TIM4_PWM
case 4:
regaddr = STM32_RCC_APB1RSTR;
resetbit = RCC_APB1RSTR_TIM4RST;
break;
#endif
#ifdef CONFIG_STM32_TIM5_PWM
case 5:
regaddr = STM32_RCC_APB1RSTR;
resetbit = RCC_APB1RSTR_TIM5RST;
break;
#endif
#ifdef CONFIG_STM32_TIM8_PWM
case 8:
regaddr = STM32_RCC_APB2RSTR;
resetbit = RCC_APB2RSTR_TIM8RST;
break;
#endif
default:
return -EINVAL;
}
/* Reset the timer - stopping the output and putting the timer back
* into a state where stm32_start() can be called.
*/
regval = getreg32(regaddr);
regval |= resetbit;
putreg32(regval, regaddr);
regval &= ~resetbit;
putreg32(regval, regaddr);
irqrestore(flags);
qevdbg("regaddr: %08x resetbit: %08x\n", regaddr, resetbit);
stm32_dumpregs(priv, "After stop");
/* Put the TI1 GPIO pin back to its default state */
pincfg = priv->config->ti1cfg & (GPIO_PORT_MASK|GPIO_PIN_MASK);
#if defined(CONFIG_STM32_STM32F10XX)
pincfg |= (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT);
#elif defined(CONFIG_STM32_STM32F40XX)
pincfg |= (GPIO_INPUT|GPIO_FLOAT);
#else
# error "Unrecognized STM32 chip"
#endif
stm32_configgpio(pincfg);
/* Put the TI2 GPIO pin back to its default state */
pincfg = priv->config->ti2cfg & (GPIO_PORT_MASK|GPIO_PIN_MASK);
#if defined(CONFIG_STM32_STM32F10XX)
pincfg |= (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT);
#elif defined(CONFIG_STM32_STM32F40XX)
pincfg |= (GPIO_INPUT|GPIO_FLOAT);
#else
# error "Unrecognized STM32 chip"
#endif
stm32_configgpio(pincfg);
return -ENOSYS;
}
@ -720,6 +1027,10 @@ int stm32_qeinitialize(FAR const char *devpath, int tim)
return ret;
}
/* Make sure that the timer is in the shutdown state */
stm32_shutdown((FAR struct qe_lowerhalf_s *)priv);
/* The driver is now in-use */
priv->inuse = true;