WIP: battery indicator

src/main.c

@@ -310,6 +310,61 @@ static void debug_init()
 	UART1_BaudRateCfg(921600);
 }
 
+uint16_t adcBuff[40];
+static int read_batt()
+{
+	int ret = 0;
+	/* adc 1 - pa5 */
+	PRINT("\n2.Single channel sampling...\n");
+	GPIOA_ModeCfg(GPIO_Pin_5, GPIO_ModeIN_Floating);
+	ADC_ExtSingleChSampInit(SampleFreq_3_2, ADC_PGA_0);
+
+	int16_t RoughCalib_Value = ADC_DataCalib_Rough(); // 用于计算ADC内部偏差，记录到全局变量 RoughCalib_Value中
+	PRINT("RoughCalib_Value =%d \n", RoughCalib_Value);
+
+	ADC_ChannelCfg(1);
+
+	int ratio = 4096 / 100;
+
+	for(int i = 0; i < 20; i++) {
+		adcBuff[i] = ADC_ExcutSingleConver() + RoughCalib_Value; // 连续采样20次
+		ret += adcBuff[i] / ratio;
+	}
+	for(int i = 0; i < 20; i++) {
+		PRINT("%d \n", adcBuff[i]); // 注意：由于ADC内部偏差的存在，当采样电压在所选增益范围极限附近的时候，可能会出现数据溢出的现象
+	}
+
+	return (ret / 20);
+}
+
+static int is_charging()
+{
+	GPIOA_ModeCfg(GPIO_Pin_0, GPIO_ModeIN_PU);
+	return GPIOA_ReadPortPin(GPIO_Pin_0) == 0;
+}
+
+static void disp_bat_stt(int bat_percent, int col, int row)
+{
+	xbm2fb(&bat_xbm, fb, col, row);
+	bat_percent /= 10;
+	for (int i=1; i <= bat_percent; i++) {
+		fb[col + i] = fb[col];
+	}
+}
+
+static void disp_charging()
+{
+	while (1) {
+		read_batt();
+		disp_bat_stt(read_batt(), 7, 2);
+
+		if (is_charging())
+			ani_xbm_next_frame(&coffee_cup_xbm, fb, 25, 0);
+
+		DelayMs(300);
+	}
+}
+
 int main()
 {
 	SetSysClock(CLK_SOURCE_PLL_60MHz);
@@ -327,6 +382,8 @@ int main()
 	PFIC_EnableIRQ(TMR0_IRQn);
 
 	bmlist_init(LED_COLS * 4);
+
+	disp_charging();
 
 	play_splash(&splash, 0, 0);
 

src/res/bat-icon.xbm

@@ -0,0 +1,5 @@
+#define bat_icon_width 13
+#define bat_icon_height 7
+static unsigned char bat_icon_bits[] = {
+   0xff, 0x0f, 0x01, 0x08, 0x01, 0x18, 0x01, 0x18, 0x01, 0x18, 0x01, 0x08,
+   0xff, 0x0f };

src/res/coffee-cup.xbm

@@ -0,0 +1,7 @@
+#define coffee_cup_width 10
+#define coffee_cup_height 22
+static unsigned char coffee_cup_bits[] = {
+   0x88, 0x00, 0x44, 0x00, 0x48, 0x00, 0x00, 0x00, 0xfe, 0x00, 0x82, 0x03,
+   0x82, 0x02, 0x82, 0x02, 0x82, 0x01, 0x7c, 0x00, 0x00, 0x00, 0x10, 0x01,
+   0x88, 0x00, 0x48, 0x00, 0x00, 0x00, 0xfe, 0x00, 0x82, 0x03, 0x82, 0x02,
+   0x82, 0x02, 0x82, 0x01, 0x7c, 0x00, 0x00, 0x00 };

src/resource.c

@@ -2,6 +2,8 @@
 
 #include "res/bluetooth.xbm"
 #include "res/foss-asia-2.xbm"
+#include "res/bat-icon.xbm"
+#include "res/coffee-cup.xbm"
 
 xbm_t bluetooth = {
 	.bits = bluetooth_bits, 
@@ -15,4 +17,18 @@ xbm_t splash = {
 	.w = foss_asia_2_width, 
 	.h = foss_asia_2_height,
 	.fh = 11
+};
+
+xbm_t bat_xbm = {
+	.bits = bat_icon_bits, 
+	.w = bat_icon_width, 
+	.h = bat_icon_height,
+	.fh = 11
+};
+
+xbm_t coffee_cup_xbm = {
+	.bits = coffee_cup_bits, 
+	.w = coffee_cup_width, 
+	.h = coffee_cup_height,
+	.fh = 11
 };

src/resource.h

@@ -6,5 +6,7 @@
 
 extern xbm_t bluetooth;
 extern xbm_t splash;
+extern xbm_t bat_xbm;
+extern xbm_t coffee_cup_xbm;
 
 #endif /* __RES_H__ */