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2 changed files with 15 additions and 22 deletions

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@ -31,11 +31,8 @@ static size_t dht11_read_value(struct DHT11_Data *data)
register uint32_t read_register = 0;
HAL_TIM_Base_Start(&htim2);
// try to trigger the output
for (int t = 0; t < 10; t++) {
TIM2->CNT = 0;
HAL_TIM_Base_Start(&htim2);
GPIOD->MODER |= 0x00400000; // enable output mode on GPIOD 11
@ -51,14 +48,12 @@ static size_t dht11_read_value(struct DHT11_Data *data)
// reading pull down from DHT11
SKIP_LOW;
// waiting for response
for (size_t i = TIM2->CNT + (200000 << 4); TIM2->CNT <= i; )
// waiting for 500ms max
for (size_t i = TIM2->CNT + (500000 << 4); TIM2->CNT <= i; )
if (!(GPIOD->IDR & 0x0800))
goto reading_data;
}
// if didn't exit through goto, then DHT11 awaiting has timed out
HAL_TIM_Base_Stop(&htim2);
return 1;
reading_data:

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@ -98,7 +98,6 @@ int ReadRegister(uint32_t reg, uint16_t *value)
ETH->MACMIIAR = tmpreg1;
TIM2->CNT = 0;
HAL_TIM_Base_Start(&htim2);
while (ETH->MACMIIAR & 1) {
@ -123,7 +122,6 @@ int WriteRegister(uint32_t reg, uint16_t value)
ETH->MACMIIDR = value;
ETH->MACMIIAR = tmpreg1;
TIM2->CNT = 0;
HAL_TIM_Base_Start(&htim2);
while (ETH->MACMIIAR & 1) {