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Merge pull request #3427 from LMESTM/fix_stm_i2c_slave 

Fix stm i2c slave
pull/3316/merge
Sam Grove 2016-12-15 10:33:06 -06:00 committed by GitHub
parent cf75543cfa 77e202f064
commit 45fa92dcb3
1 changed files with 30 additions and 6 deletions
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36
targets/TARGET_STM/i2c_api.c
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@ -128,15 +128,27 @@ void i2c_ev_err_enable(i2c_t *obj, uint32_t handler) {
struct i2c_s *obj_s = I2C_S(obj);
IRQn_Type irq_event_n = obj_s->event_i2cIRQ;
IRQn_Type irq_error_n = obj_s->error_i2cIRQ;
/* default prio in master case is set to 2 */
uint32_t prio = 2;
/* Set up event IT using IRQ and handler tables */
/* Set up ITs using IRQ and handler tables */
NVIC_SetVector(irq_event_n, handler);
HAL_NVIC_SetPriority(irq_event_n, 0, 0);
HAL_NVIC_EnableIRQ(irq_event_n);
/* Set up error IT using IRQ and handler tables */
NVIC_SetVector(irq_error_n, handler);
HAL_NVIC_SetPriority(irq_error_n, 0, 1);
HAL_NVIC_EnableIRQ(irq_error_n);
#if DEVICE_I2CSLAVE
/* Set higher priority to slave device than master.
* In case a device makes use of both master and slave, the
* slave needs higher responsiveness.
*/
if (obj_s->slave) {
prio = 1;
}
#endif
NVIC_SetPriority(irq_event_n, prio);
NVIC_SetPriority(irq_error_n, prio);
NVIC_EnableIRQ(irq_event_n);
NVIC_EnableIRQ(irq_error_n);
}
void i2c_ev_err_disable(i2c_t *obj) {
@ -751,12 +763,24 @@ void HAL_I2C_ErrorCallback(I2C_HandleTypeDef *hi2c){
/* Get object ptr based on handler ptr */
i2c_t *obj = get_i2c_obj(hi2c);
struct i2c_s *obj_s = I2C_S(obj);
#if DEVICE_I2CSLAVE
I2C_HandleTypeDef *handle = &(obj_s->handle);
uint32_t address = 0;
/* Store address to handle it after reset */
if(obj_s->slave)
address = handle->Init.OwnAddress1;
#endif
DEBUG_PRINTF("HAL_I2C_ErrorCallback:%d, index=%d\r\n", (int) hi2c->ErrorCode, obj_s->index);
/* re-init IP to try and get back in a working state */
i2c_init(obj, obj_s->sda, obj_s->scl);
#if DEVICE_I2CSLAVE
/* restore slave address */
i2c_slave_address(obj, 0, address, 0);
#endif
/* Keep Set event flag */
obj_s->event = I2C_EVENT_ERROR;
}