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Fix crash related to improper instance assignment

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This commit is contained in:
Hierophect 2019-09-19 14:15:12 -04:00
parent c85873e4e6
commit d56b62e44c
1 changed files with 4 additions and 4 deletions
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8
ports/stm32f4/common-hal/busio/I2C.c
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@ -55,7 +55,7 @@ void common_hal_busio_i2c_construct(busio_i2c_obj_t *self,
}
//handle typedef selection, errors
if(self->sda->i2c_index == self->scl->i2c_index) {
if(self->sda!=NULL && self->scl!=NULL) {
I2Cx = mcu_i2c_banks[self->sda->i2c_index-1];
} else {
mp_raise_RuntimeError(translate("Invalid I2C pin selection"));
@ -67,14 +67,14 @@ void common_hal_busio_i2c_construct(busio_i2c_obj_t *self,
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = 4;//self->sda->altfn_index;
GPIO_InitStruct.Alternate = self->sda->altfn_index;
HAL_GPIO_Init(pin_port(sda->port), &GPIO_InitStruct);
GPIO_InitStruct.Pin = pin_mask(scl->number);
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = 4; //self->scl->altfn_index;
GPIO_InitStruct.Alternate = self->scl->altfn_index;
HAL_GPIO_Init(pin_port(scl->port), &GPIO_InitStruct);
#ifdef I2C1
@ -87,7 +87,7 @@ void common_hal_busio_i2c_construct(busio_i2c_obj_t *self,
if(I2Cx==I2C3) __HAL_RCC_I2C3_CLK_ENABLE();
#endif
self->handle.Instance = I2C1;//I2Cx;
self->handle.Instance = I2Cx;
self->handle.Init.ClockSpeed = 100000;
self->handle.Init.DutyCycle = I2C_DUTYCYCLE_2;
self->handle.Init.OwnAddress1 = 0;