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KSZ8081RND
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@ -31,11 +31,8 @@ static size_t dht11_read_value(struct DHT11_Data *data)
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register uint32_t read_register = 0;
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register uint32_t read_register = 0;
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HAL_TIM_Base_Start(&htim2);
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// try to trigger the output
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for (int t = 0; t < 10; t++) {
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TIM2->CNT = 0;
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TIM2->CNT = 0;
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HAL_TIM_Base_Start(&htim2);
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GPIOD->MODER |= 0x00400000; // enable output mode on GPIOD 11
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GPIOD->MODER |= 0x00400000; // enable output mode on GPIOD 11
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@ -51,14 +48,12 @@ static size_t dht11_read_value(struct DHT11_Data *data)
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// reading pull down from DHT11
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// reading pull down from DHT11
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SKIP_LOW;
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SKIP_LOW;
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// waiting for response
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// waiting for 500ms max
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for (size_t i = TIM2->CNT + (200000 << 4); TIM2->CNT <= i; )
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for (size_t i = TIM2->CNT + (500000 << 4); TIM2->CNT <= i; )
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if (!(GPIOD->IDR & 0x0800))
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if (!(GPIOD->IDR & 0x0800))
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goto reading_data;
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goto reading_data;
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}
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// if didn't exit through goto, then DHT11 awaiting has timed out
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// if didn't exit through goto, then DHT11 awaiting has timed out
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HAL_TIM_Base_Stop(&htim2);
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return 1;
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return 1;
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reading_data:
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reading_data:
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@ -98,7 +98,6 @@ int ReadRegister(uint32_t reg, uint16_t *value)
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ETH->MACMIIAR = tmpreg1;
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ETH->MACMIIAR = tmpreg1;
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TIM2->CNT = 0;
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HAL_TIM_Base_Start(&htim2);
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HAL_TIM_Base_Start(&htim2);
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while (ETH->MACMIIAR & 1) {
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while (ETH->MACMIIAR & 1) {
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@ -123,7 +122,6 @@ int WriteRegister(uint32_t reg, uint16_t value)
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ETH->MACMIIDR = value;
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ETH->MACMIIDR = value;
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ETH->MACMIIAR = tmpreg1;
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ETH->MACMIIAR = tmpreg1;
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TIM2->CNT = 0;
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HAL_TIM_Base_Start(&htim2);
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HAL_TIM_Base_Start(&htim2);
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while (ETH->MACMIIAR & 1) {
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while (ETH->MACMIIAR & 1) {
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