BlackMark/AdaptiveBrightness
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Implement sampling ADC and printing over VSP

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BlackMark
2020-06-28 16:23:20 +02:00
parent f678273def
commit e6205458c5
2 changed files with 62 additions and 9 deletions
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50
AdaptiveBrightnessFirmware/Src/main.cpp
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@@ -1,6 +1,34 @@
#include <cstdint>
#include <array>
#include <cstdint>
#include <cstdio>
#include "adc.h"
#include "init.h"
#include "usbd_cdc_if.h"
#include "utils.hpp"
template<size_t SensorID>
uint16_t readLightSensor()
{
static_assert(SensorID >= 0 && SensorID < 3, "Invalid light sensor ID");
std::array<uint16_t, 3> adcValues;
HAL_ADC_Start(&hadc);
util::for_constexpr(
[&adcValues](const auto& idx) {
constexpr auto i = idx.value;
HAL_ADC_PollForConversion(&hadc, 100);
adcValues[i] = HAL_ADC_GetValue(&hadc);
},
std::make_index_sequence<3>{});
HAL_ADC_Stop(&hadc);
return adcValues[SensorID];
}
int main()
{
@@ -17,17 +45,21 @@ int main()
HAL_GPIO_WritePin(BLUE_LED_GPIO_Port, BLUE_LED_Pin, GPIO_PIN_SET);
while(true) {
HAL_GPIO_WritePin(RED_LED_GPIO_Port, RED_LED_Pin, GPIO_PIN_RESET);
HAL_Delay(1000);
HAL_GPIO_WritePin(RED_LED_GPIO_Port, RED_LED_Pin, GPIO_PIN_SET);
// HAL_GPIO_WritePin(RED_LED_GPIO_Port, RED_LED_Pin, GPIO_PIN_RESET);
HAL_GPIO_WritePin(GREEN_LED_GPIO_Port, GREEN_LED_Pin, GPIO_PIN_RESET);
HAL_Delay(1000);
HAL_GPIO_WritePin(GREEN_LED_GPIO_Port, GREEN_LED_Pin, GPIO_PIN_SET);
util::for_constexpr(
[](const auto& idx) {
constexpr auto i = idx.value;
const auto ldrVal = readLightSensor<i>();
std::array<uint8_t, 32> printBuffer;
const auto bufLen = std::sprintf(reinterpret_cast<char*>(printBuffer.data()), "LDR%d: %d\r\n%s", i + 1, ldrVal, (i == 2) ? "\r\n" : "");
if(bufLen > 0)
CDC_Transmit_FS(printBuffer.data(), bufLen);
},
std::make_index_sequence<3>{});
HAL_GPIO_WritePin(BLUE_LED_GPIO_Port, BLUE_LED_Pin, GPIO_PIN_RESET);
// HAL_GPIO_WritePin(RED_LED_GPIO_Port, RED_LED_Pin, GPIO_PIN_SET);
HAL_Delay(1000);
HAL_GPIO_WritePin(BLUE_LED_GPIO_Port, BLUE_LED_Pin, GPIO_PIN_SET);
}
return 0;