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STM32 I2C: use higher IRQ priority for slave vs. master

pull/3427/head
Laurent MEUNIER 2016-12-05 14:21:14 +01:00
parent 9895bcf130
commit 77e202f064
1 changed files with 18 additions and 6 deletions
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24
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) {