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STM32L4: stm32l4_i2c: add I2C4 code

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This commit is contained in:
Juha Niskanen 2017-04-28 08:09:16 -06:00 committed by Gregory Nutt
parent d928b4271d
commit b4d2651ca9
3 changed files with 61 additions and 7 deletions
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4
arch/arm/include/stm32l4/stm32l4x6xx_irq.h
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@ -149,8 +149,8 @@
/* STM32L496xx/4A6xx only: */
#define STM32L4_IRQ_HASH_CRS (STM32L4_IRQ_FIRST+82) /* 82: HASH and CRS global interrupt */
#define STM32L4_IRQ_I2C4_EV (STM32L4_IRQ_FIRST+83) /* 83: I2C4 event interrupt */
#define STM32L4_IRQ_I2C4_ER (STM32L4_IRQ_FIRST+84) /* 84: I2C4 error interrupt */
#define STM32L4_IRQ_I2C4EV (STM32L4_IRQ_FIRST+83) /* 83: I2C4 event interrupt */
#define STM32L4_IRQ_I2C4ER (STM32L4_IRQ_FIRST+84) /* 84: I2C4 error interrupt */
#define STM32L4_IRQ_DCMI (STM32L4_IRQ_FIRST+85) /* 85: DCMI global interrupt */
#define STM32L4_IRQ_CAN2TX (STM32L4_IRQ_FIRST+86) /* 86: CAN2 TX interrupts */
#define STM32L4_IRQ_CAN2RX0 (STM32L4_IRQ_FIRST+87) /* 87: CAN2 RX0 interrupts */

4
arch/arm/src/stm32l4/README.txt
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@ -26,7 +26,7 @@ SRAM2 : OK; can be included in MM region or left separate for special app
: purposes
FIREWALL : Code written, to be tested, requires support from ldscript
SPI : OK, tested (Including DMA)
I2C : Code written, to be tested (I2C4 missing)
I2C : Code written, to be tested
RTC : works
QSPI : works in polling, interrupt, DMA, and also memory-mapped modes
CAN : OK, tested
@ -57,7 +57,7 @@ SWP : TODO (Single wire protocol master, to connect with NFC enabled
LPUART : TODO (Low power UART working with LSE at low baud rates)
LPTIMER : TODO (Low power TIMER)
OPAMP : TODO (Analog operational amplifier)
COMP : TODO (Analog comparators)
COMP : There is some code (Analog comparators)
DFSDM : TODO (Digital Filter and Sigma-Delta Modulator)
LCD : TODO (Segment LCD controller)
SAIPLL : works (PLL For Digital Audio interfaces, and other things)

60
arch/arm/src/stm32l4/stm32l4_i2c.c
View File

@ -96,7 +96,8 @@
/* At least one I2C peripheral must be enabled */
#if defined(CONFIG_STM32L4_I2C1) || defined(CONFIG_STM32L4_I2C2) || defined(CONFIG_STM32L4_I2C3)
#if defined(CONFIG_STM32L4_I2C1) || defined(CONFIG_STM32L4_I2C2) || \
defined(CONFIG_STM32L4_I2C3) || defined(CONFIG_STM32L4_I2C4)
/************************************************************************************
* Pre-processor Definitions
@ -300,6 +301,9 @@ static int stm32l4_i2c2_isr(int irq, void *context, FAR void *arg);
#ifdef CONFIG_STM32L4_I2C3
static int stm32l4_i2c3_isr(int irq, void *context, FAR void *arg);
#endif
#ifdef CONFIG_STM32L4_I2C4
static int stm32l4_i2c4_isr(int irq, void *context, FAR void *arg);
#endif
#endif
static int stm32l4_i2c_init(FAR struct stm32l4_i2c_priv_s *priv);
static int stm32l4_i2c_deinit(FAR struct stm32l4_i2c_priv_s *priv);
@ -413,6 +417,36 @@ struct stm32l4_i2c_priv_s stm32l4_i2c3_priv =
};
#endif
#ifdef CONFIG_STM32L4_I2C4
static const struct stm32l4_i2c_config_s stm32l4_i2c4_config =
{
.base = STM32L4_I2C4_BASE,
.clk_bit = RCC_APB1ENR2_I2C4EN,
.reset_bit = RCC_APB1RSTR2_I2C4RST,
.scl_pin = GPIO_I2C4_SCL,
.sda_pin = GPIO_I2C4_SDA,
#ifndef CONFIG_I2C_POLLED
.isr = stm32l4_i2c4_isr,
.ev_irq = STM32L4_IRQ_I2C4EV,
.er_irq = STM32L4_IRQ_I2C4ER
#endif
};
struct stm32l4_i2c_priv_s stm32l4_i2c4_priv =
{
.ops = &stm32l4_i2c_ops,
.config = &stm32l4_i2c4_config,
.refs = 0,
.intstate = INTSTATE_IDLE,
.msgc = 0,
.msgv = NULL,
.ptr = NULL,
.dcnt = 0,
.flags = 0,
.status = 0
};
#endif
/************************************************************************************
* Private Functions
************************************************************************************/
@ -1541,7 +1575,7 @@ static int stm32l4_i2c2_isr(int irq, void *context, FAR void *arg)
* Name: stm32l4_i2c3_isr
*
* Description:
* I2C2 interrupt service routine
* I2C3 interrupt service routine
*
************************************************************************************/
@ -1551,7 +1585,22 @@ static int stm32l4_i2c3_isr(int irq, void *context, FAR void *arg)
return stm32l4_i2c_isr(&stm32l4_i2c3_priv);
}
#endif
/************************************************************************************
* Name: stm32l4_i2c4_isr
*
* Description:
* I2C4 interrupt service routine
*
************************************************************************************/
#ifdef CONFIG_STM32L4_I2C4
static int stm32l4_i2c4_isr(int irq, void *context, FAR void *arg)
{
return stm32l4_i2c_isr(&stm32l4_i2c4_priv);
}
#endif
#endif /* !CONFIG_I2C_POLLED */
/************************************************************************************
* Private Initialization and Deinitialization
@ -2009,6 +2058,11 @@ FAR struct i2c_master_s *stm32l4_i2cbus_initialize(int port)
case 3:
priv = (struct stm32l4_i2c_priv_s *)&stm32l4_i2c3_priv;
break;
#endif
#ifdef CONFIG_STM32L4_I2C4
case 4:
priv = (struct stm32l4_i2c_priv_s *)&stm32l4_i2c4_priv;
break;
#endif
default:
return NULL;
@ -2072,5 +2126,5 @@ int stm32l4_i2cbus_uninitialize(FAR struct i2c_master_s * dev)
return OK;
}
#endif /* CONFIG_STM32L4_I2C1 || CONFIG_STM32L4_I2C2 || CONFIG_STM32L4_I2C3 */
#endif /* CONFIG_STM32L4_I2C1 || CONFIG_STM32L4_I2C2 || CONFIG_STM32L4_I2C3 || CONFIG_STM32L4_I2C4 */