MD-3x0: using STM32 ADC driver

meson.build

@@ -156,8 +156,7 @@ openrtx_def += {'GIT_VERSION': git_version}
 ## TYT MDx family
 ##
 
-mdx_src = ['platform/drivers/ADC/ADC1_MDx.c',
-           'platform/drivers/GPS/GPS_MDx.cpp',
+mdx_src = ['platform/drivers/GPS/GPS_MDx.cpp',
            'platform/drivers/NVM/W25Qx.c',
            'platform/drivers/NVM/nvmem_settings_MDx.c',
            'platform/drivers/NVM/nvmem_MDx.c',

platform/drivers/baseband/radio_MD3x0.cpp

@@ -24,8 +24,8 @@
 #include <peripherals/gpio.h>
 #include <calibInfo_MDx.h>
 #include <spi_bitbang.h>
+#include <adc_stm32.h>
 #include <hwconfig.h>
-#include <ADC1_MDx.h>
 #include <algorithm>
 #include <utils.h>
 #include "HR_C5000.h"
@@ -383,7 +383,7 @@ rssi_t radio_getRssi()
     if(rxFreq < 401035000) offset_index = 0;
     if(rxFreq > 479995000) offset_index = 8;
 
-    float rssi_mv  = ((float) adc1_getMeasurement(ADC_RSSI_CH));
+    float rssi_mv  = ((float) adc_getVoltage(&adc1, ADC_RSSI_CH)) / 1000.0f;
     float rssi_dbm = (rssi_mv - rssi_offset[offset_index]) / rssi_gain;
     return static_cast< rssi_t >(rssi_dbm);
 }

platform/targets/MD-3x0/hwconfig.c

@@ -21,6 +21,7 @@
 #include <spi_bitbang.h>
 #include <spi_custom.h>
 #include <spi_stm32.h>
+#include <adc_stm32.h>
 #include <SKY72310.h>
 #include <hwconfig.h>
 #include <pinmap.h>
@@ -43,9 +44,12 @@ const struct spiConfig spiC5000Cfg =
     .flags     = SPI_FLAG_CPHA
 };
 
+static pthread_mutex_t adc1Mutex;
+
 SPI_STM32_DEVICE_DEFINE(nvm_spi, SPI1, NULL)
 SPI_BITBANG_DEVICE_DEFINE(pll_spi, spiPllCfg, NULL)
 SPI_BITBANG_DEVICE_DEFINE(c5000_spi, spiC5000Cfg, NULL)
+ADC_STM32_DEVICE_DEFINE(adc1, ADC1, &adc1Mutex, 3300000)
 
 const struct sky73210 pll =
 {

platform/targets/MD-3x0/hwconfig.h

@@ -27,10 +27,19 @@
 extern "C" {
 #endif
 
+enum adcChannel
+{
+    ADC_VOL_CH   = 0,
+    ADC_VBAT_CH  = 1,
+    ADC_VOX_CH   = 3,
+    ADC_RSSI_CH  = 8
+};
+
 extern const struct spiDevice nvm_spi;
 extern const struct spiCustomDevice pll_spi;
 extern const struct spiCustomDevice c5000_spi;
 extern const struct sky73210 pll;
+extern const struct Adc adc1;
 
 /* Device has a working real time clock */
 #define CONFIG_RTC

platform/targets/MD-3x0/platform.c

@@ -22,7 +22,7 @@
 #include <interfaces/platform.h>
 #include <hwconfig.h>
 #include <string.h>
-#include <ADC1_MDx.h>
+#include <adc_stm32.h>
 #include <calibInfo_MDx.h>
 #include <toneGenerator_MDx.h>
 #include <peripherals/rtc.h>
@@ -44,17 +44,18 @@ void platform_init()
     gpio_setMode(PTT_SW,  INPUT_PULL_UP);
     gpio_setMode(PTT_EXT, INPUT_PULL_UP);
 
+    gpio_setMode(AIN_VBAT,   ANALOG);
+    gpio_setMode(AIN_VOLUME, ANALOG);
+    gpio_setMode(AIN_MIC,    ANALOG);
+    gpio_setMode(AIN_RSSI,   ANALOG);
+
     #ifndef RUNNING_TESTSUITE
     gpio_setMode(PWR_SW, OUTPUT);
     gpio_setPin(PWR_SW);
     #endif
 
-    /*
-     * Initialise ADC1, for vbat, RSSI, ...
-     * Configuration of corresponding GPIOs in analog input mode is done inside
-     * the driver.
-     */
-    adc1_init();
+    /* Initialise ADC1, for vbat, RSSI, ... */
+    adcStm32_init(&adc1);
 
     memset(&hwInfo, 0x00, sizeof(hwInfo));
 
@@ -72,7 +73,7 @@ void platform_terminate()
     gpio_clearPin(RED_LED);
 
     /* Shut down all the modules */
-    adc1_terminate();
+    adcStm32_terminate(&adc1);
     nvm_terminate();
     toneGen_terminate();
     audio_terminate();
@@ -85,16 +86,16 @@ uint16_t platform_getVbat()
 {
     /*
      * Battery voltage is measured through an 1:3 voltage divider and
-     * adc1_getMeasurement returns a value in mV. Thus, to have effective
-     * battery voltage, multiply by three.
+     * adc1_getMeasurement returns a value in uV.
      */
-    return adc1_getMeasurement(ADC_VBAT_CH) * 3;
+    uint32_t vbat = adc_getVoltage(&adc1, ADC_VBAT_CH) * 3;
+    return vbat / 1000;
 }
 
 uint8_t platform_getMicLevel()
 {
     /* Value from ADC is 12 bit wide: shift right by four to get 0 - 255 */
-    return (adc1_getRawSample(ADC_VOX_CH) >> 4);
+    return adc_getRawSample(&adc1, ADC_VOX_CH) >> 4;
 }
 
 uint8_t platform_getVolumeLevel()
@@ -105,7 +106,7 @@ uint8_t platform_getVolumeLevel()
      * lines with a breakpoint around 270mV.
      * Output value has range 0 - 255 with breakpoint at 150.
      */
-    uint16_t value = adc1_getMeasurement(ADC_VOL_CH);
+    uint32_t value = adc_getVoltage(&adc1, ADC_VOL_CH) / 1000;
     uint32_t output;
 
     if(value <= 270)