1 files changed, 0 insertions, 164 deletions
diff --git a/src/stm32f0/adc.c b/src/stm32f0/adc.c
deleted file mode 100644
index e4a4213c..00000000
--- a/src/stm32f0/adc.c
+++ /dev/null
@@ -1,164 +0,0 @@
-/*
- *  ADC functions on STM32F0
- *
- *  Copyright (C) 2019 Eug Krashtan <eug.krashtan@gmail.com>
- *  This file may be distributed under the terms of the GNU GPLv3 license.
- *
- */
-
-#include <stdbool.h> // bool
-#include "board/gpio.h" // gpio_adc_setup
-#include "board/io.h" // readb
-#include "stm32f0xx_hal.h"
-#include "internal.h" // GPIO
-#include "compiler.h" // ARRAY_SIZE
-#include "command.h" // shutdown
-#include "sched.h" // sched_shutdown
-
-DECL_CONSTANT("ADC_MAX", 4095);
-
-#define ADC_DELAY (240 * 8)
-static bool adc_busy;
-static uint8_t adc_current_channel;
-ADC_HandleTypeDef hadc;
-
-static const uint8_t adc_pins[] = {
-    GPIO('A', 0), GPIO('A', 1),
-#if !(CONFIG_SERIAL)
-    GPIO('A', 2), GPIO('A', 3),
-#endif
-    GPIO('A', 4), GPIO('A', 5), GPIO('A', 6), GPIO('A', 7),
-    GPIO('B', 1),
-    // Fake ADC on this GPIO (returns tempsensor value)
-    GPIO('B', 8)
-};
-
-static const uint32_t adc_channels[] = {
-    ADC_CHANNEL_0,
-    ADC_CHANNEL_1,
-#if !(CONFIG_SERIAL)
-    ADC_CHANNEL_2,
-    ADC_CHANNEL_3,
-#endif
-    ADC_CHANNEL_4,
-    ADC_CHANNEL_5,
-    ADC_CHANNEL_6,
-    ADC_CHANNEL_7,
-    ADC_CHANNEL_9,
-    // For tests
-    ADC_CHANNEL_TEMPSENSOR
-};
-
-struct gpio_adc
-gpio_adc_setup(uint8_t pin)
-{
-    // Find pin in adc_pins table
-    int chan;
-    ADC_ChannelConfTypeDef sConfig = {0};
-    for (chan=0; ; chan++) {
-        if (chan >= ARRAY_SIZE(adc_pins))
-            shutdown("Not a valid ADC pin");
-        if (adc_pins[chan] == pin) {
-            sConfig.Channel = adc_channels[chan];
-            break;
-        }
-    }
-
-    /**ADC GPIO Configuration
-    */
-    GPIO_InitTypeDef GPIO_InitStruct = {0};
-    GPIO_InitStruct.Pin = 1 << (pin % 16);;
-    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
-    GPIO_InitStruct.Pull = GPIO_NOPULL;
-    HAL_GPIO_Init((pin<8)?GPIOA:GPIOB, &GPIO_InitStruct);
-    /**Configure for the selected ADC regular channel to be converted.
-    */
-    sConfig.Rank = ADC_RANK_CHANNEL_NUMBER;
-    sConfig.SamplingTime = ADC_SAMPLETIME_239CYCLES_5;
-    HAL_ADC_ConfigChannel(&hadc, &sConfig);
-    HAL_ADCEx_Calibration_Start(&hadc);
-    return (struct gpio_adc){ .pin = adc_channels[chan] };
-}
-
-// Try to sample a value. Returns zero if sample ready, otherwise
-// returns the number of clock ticks the caller should wait before
-// retrying this function.
-uint32_t
-gpio_adc_sample(struct gpio_adc g)
-{
-    /* ADC not busy, start conversion */
-    if (!readb(&adc_busy)) {
-        HAL_ADC_Start(&hadc);
-        adc_busy = true;
-        adc_current_channel = g.pin;
-        return ADC_DELAY;
-    /* ADC finished conversion for this channel */
-    } else if (HAL_ADC_PollForConversion(&hadc, 100) == HAL_OK) {
-        __HAL_ADC_CLEAR_FLAG(&hadc, ADC_FLAG_EOS);
-        adc_busy = false;
-        return 0;
-    }
-    /* Wants to sample another channel, or not finished yet */
-    return ADC_DELAY;
-}
-
-// Read a value; use only after gpio_adc_sample() returns zero
-uint16_t
-gpio_adc_read(struct gpio_adc g)
-{
-    return HAL_ADC_GetValue(&hadc);
-}
-
-// Cancel a sample that may have been started with gpio_adc_sample()
-void
-gpio_adc_cancel_sample(struct gpio_adc g)
-{
-    if (readb(&adc_busy) && readl(&adc_current_channel) == g.pin) {
-        adc_busy = false;
-        HAL_ADC_Stop(&hadc);
-    }
-}
-
-/**
-  * @brief ADC Initialization Function
-  * @param None
-  * @retval None
-  */
-void AdcInit(void)
-{
-    /**Configure the global features of the ADC (Clock,
-     * Resolution, Data Alignment and number of conversion)
-    */
-    hadc.Instance = ADC1;
-    hadc.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
-    hadc.Init.Resolution = ADC_RESOLUTION_12B;
-    hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
-    hadc.Init.ScanConvMode = ADC_SCAN_DIRECTION_FORWARD;
-    hadc.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
-    hadc.Init.LowPowerAutoWait = DISABLE;
-    hadc.Init.LowPowerAutoPowerOff = DISABLE;
-    hadc.Init.ContinuousConvMode = DISABLE;
-    hadc.Init.DiscontinuousConvMode = DISABLE;
-    hadc.Init.ExternalTrigConv = ADC_SOFTWARE_START;
-    hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
-    hadc.Init.DMAContinuousRequests = DISABLE;
-    hadc.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
-    HAL_ADC_Init(&hadc);
-}
-DECL_INIT(AdcInit);
-
-
-/**
-* @brief ADC MSP Initialization
-* @param hadc: ADC handle pointer
-* @retval None
-*/
-void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc)
-{
-    if(hadc->Instance==ADC1)
-    {
-        /* Peripheral clock enable */
-        __HAL_RCC_ADC1_CLK_ENABLE();
-        __HAL_RCC_GPIOA_CLK_ENABLE();
-    }
-}