Added support for reading the battery state.

board.c

@@ -310,6 +310,15 @@ void BOARD_ADC_Init(void)
 	ADC_SoftReset();
 }
 
+void BOARD_ADC_GetBatteryInfo(uint16_t *pCh4, uint16_t *pCh9)
+{
+	ADC_Start();
+
+	while (!ADC_CheckEndOfConversion(ADC_CH9));
+	*pCh4 = ADC_GetValue(ADC_CH4);
+	*pCh9 = ADC_GetValue(ADC_CH9);
+}
+
 void BOARD_Init(void)
 {
 	BOARD_PORTCON_Init();

board.h

@@ -17,9 +17,13 @@
 #ifndef BOARD_H
 #define BOARD_H
 
+#include <stdint.h>
+
 void BOARD_FLASH_Init(void);
 void BOARD_GPIO_Init(void);
 void BOARD_PORTCON_Init(void);
+void BOARD_ADC_Init(void);
+void BOARD_ADC_GetBatteryInfo(uint16_t *pCh4, uint16_t *pCh9);
 void BOARD_Init(void);
 
 #endif

bsp/dp32g030/saradc.h

@@ -195,6 +195,8 @@
 #define SARADC_IF_FIFO_HFULL_VALUE_SET          1U
 #define SARADC_IF_FIFO_HFULL_BITS_SET           (SARADC_IF_FIFO_HFULL_VALUE_SET << SARADC_IF_FIFO_HFULL_SHIFT)
 
+#define SARADC_CH0_ADDR                         (SARADC_BASE_ADDR + 0x0010U)
+#define SARADC_CH0                              (*(volatile uint32_t *)SARADC_CH0_ADDR)
 #define SARADC_EXTTRIG_SEL_ADDR                 (SARADC_BASE_ADDR + 0x00B0U)
 #define SARADC_EXTTRIG_SEL                      (*(volatile uint32_t *)SARADC_EXTTRIG_SEL_ADDR)
 
@@ -224,6 +226,28 @@
 #define SARADC_CALIB_KD_VALID_VALUE_YES         1U
 #define SARADC_CALIB_KD_VALID_BITS_YES          (SARADC_CALIB_KD_VALID_VALUE_YES << SARADC_CALIB_KD_VALID_SHIFT)
 
+/* -------- ADC_CHx -------- */
+
+typedef struct {
+	uint32_t STAT;
+	uint32_t DATA;
+} ADC_Channel_t;
+
+#define ADC_CHx_STAT_EOC_SHIFT                  0
+#define ADC_CHx_STAT_EOC_WIDTH                  1
+#define ADC_CHx_STAT_EOC_MASK                   (((1U << ADC_CHx_STAT_EOC_WIDTH) - 1U) << ADC_CHx_STAT_EOC_SHIFT)
+#define ADC_CHx_STAT_EOC_VALUE_NOT_COMPLETE     0U
+#define ADC_CHx_STAT_EOC_BITS_NOT_COMPLETE      (ADC_CHx_STAT_EOC_VALUE_NOT_COMPLETE << ADC_CHx_STAT_EOC_SHIFT)
+#define ADC_CHx_STAT_EOC_VALUE_COMPLETE         1U
+#define ADC_CHx_STAT_EOC_BITS_COMPLETE          (ADC_CHx_STAT_EOC_VALUE_COMPLETE << ADC_CHx_STAT_EOC_SHIFT)
+
+#define ADC_CHx_DATA_DATA_SHIFT                 0
+#define ADC_CHx_DATA_DATA_WIDTH                 12
+#define ADC_CHx_DATA_DATA_MASK                  (((1U << ADC_CHx_DATA_DATA_WIDTH) - 1U) << ADC_CHx_DATA_DATA_SHIFT)
+#define ADC_CHx_DATA_NUM_SHIFT                  12
+#define ADC_CHx_DATA_NUM_WIDTH                  4
+#define ADC_CHx_DATA_NUM_MASK                   (((1U << ADC_CHx_DATA_NUM_WIDTH) - 1U) << ADC_CHx_DATA_NUM_SHIFT)
+
 
 #endif
 

driver/adc.c

@@ -125,3 +125,26 @@ void ADC_Configure(ADC_Config_t *pAdc)
 	}
 }
 
+void ADC_Start(void)
+{
+	SARADC_START = (SARADC_START & ~SARADC_START_START_MASK) | SARADC_START_START_BITS_ENABLE;
+}
+
+bool ADC_CheckEndOfConversion(ADC_CH_MASK Mask)
+{
+	volatile ADC_Channel_t *pChannels = (volatile ADC_Channel_t *)&SARADC_CH0;
+	uint8_t Channel = ADC_GetChannelNumber(Mask);
+
+	return (pChannels[Channel].STAT & ADC_CHx_STAT_EOC_MASK) >> ADC_CHx_STAT_EOC_SHIFT;
+}
+
+uint16_t ADC_GetValue(ADC_CH_MASK Mask)
+{
+	volatile ADC_Channel_t *pChannels = (volatile ADC_Channel_t *)&SARADC_CH0;
+	uint8_t Channel = ADC_GetChannelNumber(Mask);
+
+	SARADC_IF = 1 << Channel; // TODO: Or just use 'Mask'
+
+	return (pChannels[Channel].DATA & ADC_CHx_DATA_DATA_MASK) >> ADC_CHx_DATA_DATA_SHIFT;
+}
+

driver/adc.h

@@ -50,6 +50,9 @@ void ADC_Enable(void);
 void ADC_SoftReset(void);
 uint32_t ADC_GetClockConfig(void);
 void ADC_Configure(ADC_Config_t *pAdc);
+void ADC_Start(void);
+bool ADC_CheckEndOfConversion(ADC_CH_MASK Mask);
+uint16_t ADC_GetValue(ADC_CH_MASK Mask);
 
 #endif
 

hardware/dp32g030/saradc.def

@@ -102,6 +102,8 @@ IF = 0x000C
 = NOT_SET, 0
 = SET, 1
 
+CH0 = 0x0010
+
 EXTTRIG_SEL = 0x00B0
 
 CALIB_OFFSET = 0x00F0
@@ -116,3 +118,15 @@ CALIB_KD = 0x00F4
 = NO, 0
 = YES, 1
 
+[ADC_CHx]
+$ = ADC_Channel_t
+
+STAT = 0x0000
+> EOC, 0, 1
+= NOT_COMPLETE, 0
+= COMPLETE, 1
+
+DATA = 0x0004
+> DATA, 0, 12
+> NUM, 12, 4
+