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Driver: I2C: STM32F4: Fix for every alternate i2c read failure in F2, F4 & L1 families. 

This commit fixes the i2c driver issue reported in the below link:
https://github.com/ARMmbed/mbed-os/issues/13967 on STM32F4xx platform.

The data type of XferOperation has been changed from uint8_t to uint32_t
so that it can hold a 32bit value (for example: I2C_OTHER_FRAME or
I2C_OTHER_AND_LAST_FRAME).

Signed-off-by: Krishna Mohan Dani <krishnamohan.d@hcl.com>
pull/14668/head
Krishna Mohan Dani 2021-05-12 00:16:22 +05:30
parent 14e5d307bb
commit 8f2c45c5af
3 changed files with 9 additions and 3 deletions
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2
targets/TARGET_STM/TARGET_STM32F2/objects.h
View File

@ -122,7 +122,7 @@ struct i2c_s {
PinName scl; PinName scl;
IRQn_Type event_i2cIRQ; IRQn_Type event_i2cIRQ;
IRQn_Type error_i2cIRQ; IRQn_Type error_i2cIRQ;
uint8_t XferOperation; uint32_t XferOperation;
volatile uint8_t event; volatile uint8_t event;
#if DEVICE_I2CSLAVE #if DEVICE_I2CSLAVE
uint8_t slave; uint8_t slave;

2
targets/TARGET_STM/TARGET_STM32F4/objects.h
View File

@ -106,7 +106,7 @@ struct i2c_s {
int scl_func; int scl_func;
IRQn_Type event_i2cIRQ; IRQn_Type event_i2cIRQ;
IRQn_Type error_i2cIRQ; IRQn_Type error_i2cIRQ;
uint8_t XferOperation; uint32_t XferOperation;
volatile uint8_t event; volatile uint8_t event;
#if DEVICE_I2CSLAVE #if DEVICE_I2CSLAVE
uint8_t slave; uint8_t slave;

8
targets/TARGET_STM/i2c_api.c
View File

@ -86,6 +86,10 @@ static I2C_HandleTypeDef *i2c_handles[I2C_NUM];
#define FLAG_TIMEOUT ((int)0x1000) #define FLAG_TIMEOUT ((int)0x1000)
#endif #endif
#ifdef I2C_IP_VERSION_V1
#define I2C_STATE_NONE ((uint32_t)(HAL_I2C_MODE_NONE))
#endif
/* Declare i2c_init_internal to be used in this file */ /* Declare i2c_init_internal to be used in this file */
void i2c_init_internal(i2c_t *obj, const i2c_pinmap_t *pinmap); void i2c_init_internal(i2c_t *obj, const i2c_pinmap_t *pinmap);
@ -1057,7 +1061,9 @@ void HAL_I2C_MasterRxCpltCallback(I2C_HandleTypeDef *hi2c)
/* Get object ptr based on handler ptr */ /* Get object ptr based on handler ptr */
i2c_t *obj = get_i2c_obj(hi2c); i2c_t *obj = get_i2c_obj(hi2c);
struct i2c_s *obj_s = I2C_S(obj); struct i2c_s *obj_s = I2C_S(obj);
#ifdef I2C_IP_VERSION_V1
hi2c->PreviousState = I2C_STATE_NONE;
#endif
/* Set event flag */ /* Set event flag */
obj_s->event = I2C_EVENT_TRANSFER_COMPLETE; obj_s->event = I2C_EVENT_TRANSFER_COMPLETE;
} }