152 lines
4.3 KiB
C
152 lines
4.3 KiB
C
/**
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* @file adc_mux.c
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* @brief External photodiode ADC and internal STM32 ADC helpers.
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*/
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#include "adc_mux.h"
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#include "board_handles.h"
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#include "main.h"
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uint16_t adc_mux_read_external_channel(uint8_t channel_index)
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{
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uint16_t result = 0u;
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uint32_t delay_counter;
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HAL_GPIO_WritePin(SPI4_CNV_GPIO_Port, SPI4_CNV_Pin, GPIO_PIN_RESET);
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HAL_GPIO_WritePin(SPI5_CNV_GPIO_Port, SPI5_CNV_Pin, GPIO_PIN_RESET);
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for (delay_counter = 0u; delay_counter < 500u; ++delay_counter)
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{
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}
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HAL_GPIO_WritePin(SPI4_CNV_GPIO_Port, SPI4_CNV_Pin, GPIO_PIN_SET);
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HAL_GPIO_WritePin(SPI5_CNV_GPIO_Port, SPI5_CNV_Pin, GPIO_PIN_SET);
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for (delay_counter = 0u; delay_counter < 500u; ++delay_counter)
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{
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}
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if (channel_index == 1u)
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{
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HAL_GPIO_WritePin(ADC_ThrLD1_CS_GPIO_Port, ADC_ThrLD1_CS_Pin, GPIO_PIN_SET);
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HAL_GPIO_WritePin(ADC_MPD1_CS_GPIO_Port, ADC_MPD1_CS_Pin, GPIO_PIN_RESET);
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for (delay_counter = 0u; delay_counter < 500u; ++delay_counter)
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{
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}
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LL_SPI_Enable(SPI4);
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delay_counter = 0u;
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while ((!LL_SPI_IsActiveFlag_RXNE(SPI4)) && (delay_counter <= 1000u))
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{
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++delay_counter;
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}
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LL_SPI_Disable(SPI4);
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while (delay_counter < 500u)
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{
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++delay_counter;
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}
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HAL_GPIO_WritePin(ADC_MPD1_CS_GPIO_Port, ADC_MPD1_CS_Pin, GPIO_PIN_SET);
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result = LL_SPI_ReceiveData16(SPI4);
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}
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else if (channel_index == 2u)
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{
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HAL_GPIO_WritePin(ADC_ThrLD2_CS_GPIO_Port, ADC_ThrLD2_CS_Pin, GPIO_PIN_SET);
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HAL_GPIO_WritePin(ADC_MPD2_CS_GPIO_Port, ADC_MPD2_CS_Pin, GPIO_PIN_RESET);
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for (delay_counter = 0u; delay_counter < 500u; ++delay_counter)
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{
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}
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LL_SPI_Enable(SPI5);
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delay_counter = 0u;
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while ((!LL_SPI_IsActiveFlag_RXNE(SPI5)) && (delay_counter <= 1000u))
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{
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++delay_counter;
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}
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LL_SPI_Disable(SPI5);
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while (delay_counter < 500u)
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{
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++delay_counter;
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}
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HAL_GPIO_WritePin(ADC_MPD2_CS_GPIO_Port, ADC_MPD2_CS_Pin, GPIO_PIN_SET);
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result = LL_SPI_ReceiveData16(SPI5);
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}
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else if (channel_index == 3u)
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{
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HAL_GPIO_WritePin(ADC_MPD1_CS_GPIO_Port, ADC_MPD1_CS_Pin, GPIO_PIN_SET);
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HAL_GPIO_WritePin(ADC_ThrLD1_CS_GPIO_Port, ADC_ThrLD1_CS_Pin, GPIO_PIN_RESET);
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for (delay_counter = 0u; delay_counter < 500u; ++delay_counter)
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{
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}
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LL_SPI_Enable(SPI4);
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delay_counter = 0u;
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while ((!LL_SPI_IsActiveFlag_RXNE(SPI4)) && (delay_counter <= 1000u))
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{
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++delay_counter;
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}
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LL_SPI_Disable(SPI4);
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while (delay_counter < 500u)
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{
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++delay_counter;
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}
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HAL_GPIO_WritePin(ADC_ThrLD1_CS_GPIO_Port, ADC_ThrLD1_CS_Pin, GPIO_PIN_SET);
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result = LL_SPI_ReceiveData16(SPI4);
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}
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else if (channel_index == 4u)
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{
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HAL_GPIO_WritePin(ADC_MPD2_CS_GPIO_Port, ADC_MPD2_CS_Pin, GPIO_PIN_SET);
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HAL_GPIO_WritePin(ADC_ThrLD2_CS_GPIO_Port, ADC_ThrLD2_CS_Pin, GPIO_PIN_RESET);
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for (delay_counter = 0u; delay_counter < 500u; ++delay_counter)
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{
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}
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LL_SPI_Enable(SPI5);
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delay_counter = 0u;
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while ((!LL_SPI_IsActiveFlag_RXNE(SPI5)) && (delay_counter <= 1000u))
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{
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++delay_counter;
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}
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LL_SPI_Disable(SPI5);
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while (delay_counter < 500u)
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{
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++delay_counter;
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}
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HAL_GPIO_WritePin(ADC_ThrLD2_CS_GPIO_Port, ADC_ThrLD2_CS_Pin, GPIO_PIN_SET);
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result = LL_SPI_ReceiveData16(SPI5);
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}
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return result;
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}
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uint16_t adc_mux_process_internal_adc_step(uint8_t step)
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{
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uint16_t output = 0u;
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switch (step)
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{
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case 0u:
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HAL_ADC_Start(&hadc1);
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break;
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case 1u:
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HAL_ADC_PollForConversion(&hadc1, 100u);
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output = HAL_ADC_GetValue(&hadc1);
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break;
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case 2u:
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HAL_ADC_Stop(&hadc1);
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break;
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case 3u:
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HAL_ADC_Start(&hadc3);
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break;
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case 4u:
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HAL_ADC_PollForConversion(&hadc3, 100u);
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output = HAL_ADC_GetValue(&hadc3);
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break;
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case 5u:
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HAL_ADC_Stop(&hadc3);
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break;
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default:
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break;
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}
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return output;
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}
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