diff options
Diffstat (limited to 'chip')
| -rw-r--r-- | chip/stm32/i2c.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/chip/stm32/i2c.c b/chip/stm32/i2c.c index 2ccecdba16..e1018ed31b 100644 --- a/chip/stm32/i2c.c +++ b/chip/stm32/i2c.c @@ -176,6 +176,12 @@ static int i2c_init2(void) /* enable I2C2 clock */ STM32_RCC_APB1ENR |= 1 << 22; + /* force reset if the bus is stuck in BUSY state */ + if (STM32_I2C_SR2(I2C2) & 0x2) { + STM32_I2C_CR1(I2C2) = 0x8000; + STM32_I2C_CR1(I2C2) = 0x0000; + } + /* set clock configuration : standard mode (100kHz) */ STM32_I2C_CCR(I2C2) = I2C_CCR; |