ARMmbed
/
mbed-os
mirror of https://github.com/ARMmbed/mbed-os.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

STM32: I2C: configure slave address with HAL API 

Instead of direct registers access, let's use HAL API.
This makes the code more generic accross STM32 families.
pull/3238/head
Laurent MEUNIER 2016-10-20 17:57:48 +02:00
parent fa887764bf
commit 2b53dfc453
1 changed files with 6 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
targets/TARGET_STM/TARGET_STM32F4/i2c_api.c
View File

@ -404,19 +404,13 @@ void i2c_reset(i2c_t *obj) {
#if DEVICE_I2CSLAVE
void i2c_slave_address(i2c_t *obj, int idx, uint32_t address, uint32_t mask) {
uint16_t tmpreg = 0;
struct i2c_s *obj_s = I2C_S(obj);
I2C_HandleTypeDef *handle = &(obj_s->handle);
I2C_TypeDef *i2c = (I2C_TypeDef *)obj_s->i2c;
// Get the old register value
tmpreg = i2c->OAR1;
// Reset address bits
tmpreg &= 0xFC00;
// Set new address
tmpreg |= (uint16_t)((uint16_t)address & (uint16_t)0x00FE); // 7-bits
// Store the new register value
i2c->OAR1 = tmpreg;
// I2C configuration
handle->Init.OwnAddress1 = address;
HAL_I2C_Init(handle);
}
void i2c_slave_mode(i2c_t *obj, int enable_slave) {
@ -429,6 +423,8 @@ void i2c_slave_mode(i2c_t *obj, int enable_slave) {
/* Enable Address Acknowledge */
i2c->CR1 |= I2C_CR1_ACK;
} else {
obj_s->slave = 0;
}
}