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stm32/i2c: Make sure stop condition is sent after receiving addr nack.

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Damien George 2018-05-09 15:53:09 +10:00
parent 2ada1124d4
commit e638defff4
1 changed files with 2 additions and 1 deletions
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3
ports/stm32/i2c.c
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@ -113,7 +113,8 @@ int i2c_start_addr(i2c_t *i2c, int rd_wrn, uint16_t addr, size_t len, bool stop)
// Check if the slave responded or not
if (i2c->ISR & I2C_ISR_NACKF) {
// If we get a NACK then I2C periph releases the bus, so don't send STOP
// If we get a NACK then I2C periph unconditionally sends a STOP
i2c_wait_isr_set(i2c, I2C_ISR_STOPF); // Don't leak errors from this call
i2c->CR1 &= ~I2C_CR1_PE;
return -MP_ENODEV;
}