diff options
Diffstat (limited to 'os/hal/platforms/STM32/I2Cv1')
| -rw-r--r-- | os/hal/platforms/STM32/I2Cv1/i2c_lld.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/os/hal/platforms/STM32/I2Cv1/i2c_lld.c b/os/hal/platforms/STM32/I2Cv1/i2c_lld.c index 08c7ee40b..5c18db706 100644 --- a/os/hal/platforms/STM32/I2Cv1/i2c_lld.c +++ b/os/hal/platforms/STM32/I2Cv1/i2c_lld.c @@ -281,11 +281,9 @@ static void i2c_lld_set_opmode(I2CDriver *i2cp) { *
* @param[in] i2cp pointer to the @p I2CDriver object
*
- * @return Useless value to protect last instruction from
- * optimization out.
* @notapi
*/
-static uint32_t i2c_lld_serve_event_interrupt(I2CDriver *i2cp) {
+static void i2c_lld_serve_event_interrupt(I2CDriver *i2cp) {
I2C_TypeDef *dp = i2cp->i2c;
uint32_t regSR2 = dp->SR2;
uint32_t event = dp->SR1;
@@ -314,7 +312,7 @@ static uint32_t i2c_lld_serve_event_interrupt(I2CDriver *i2cp) { /* Starts "read after write" operation, LSB = 1 -> receive.*/
i2cp->addr |= 0x01;
dp->CR1 |= I2C_CR1_START | I2C_CR1_ACK;
- return regSR2;
+ return;
}
dp->CR2 &= ~I2C_CR2_ITEVTEN;
dp->CR1 |= I2C_CR1_STOP;
@@ -325,8 +323,7 @@ static uint32_t i2c_lld_serve_event_interrupt(I2CDriver *i2cp) { }
/* Clear ADDR flag. */
if (event & (I2C_SR1_ADDR | I2C_SR1_ADD10))
- regSR2 = dp->SR2;
- return regSR2;
+ (void)dp->SR2;
}
/**
|