Updatate PMU initializaiton. Increased low battery waring levels and disabled some interrupts

ports/espressif/boards/m5stack_stick_c/axp192.h

@@ -144,21 +144,28 @@
 #define AXP192_BATT_TEMP_HIGH_THRESH 0x39
 #define AXP192_BATT_TEMP_HIGH_THRESH_DEFAULT 0b11111100
 
+#define AXP192_APS_LOW_BATT_LEVEL_1 0x3A
+#define AXP192_APS_LOW_BATT_LEVEL_2 0x3B
+#define AXP192_APS_LOW_BATT_VOLTAGE_3_695V 0b10010100
+#define AXP192_APS_LOW_BATT_VOLTAGE_3_600V 0b10000011
+
 #define AXP192_IRQ_1_ENABLE 0x40
 #define AXP192_IRQ_2_ENABLE 0x41
 #define AXP192_IRQ_3_ENABLE 0x42
+#define AXP192_IRQ_3_PEK_SHORT_PRESS 0b00000010
+#define AXP192_IRQ_3_PEK_LONG_PRESS  0b00000001
 #define AXP192_IRQ_4_ENABLE 0x43
+#define AXP192_IRQ_4_LOW_VOLTAGE_WARNING 0b00000001
 #define AXP192_IRQ_5_ENABLE 0x4a
 
+#define AXP192_IRQ_X_DISABLE_ALL     0b00000000
+
 #define AXP192_IRQ_1_STATUS 0x44
 #define AXP192_IRQ_2_STATUS 0x45
 #define AXP192_IRQ_3_STATUS 0x46
 #define AXP192_IRQ_4_STATUS 0x47
 #define AXP192_IRQ_5_STATUS 0x4d
 
-#define AXP192_IRQ_3_PEK_SHORT_PRESS 0b00000010
-#define AXP192_IRQ_3_PEK_LONG_PRESS 0b00000001
-
 #define AXP192_ADC_ACIN_VOLTAGE_H 0x56
 #define AXP192_ADC_ACIN_VOLTAGE_L 0x57
 #define AXP192_ADC_ACIN_CURRENT_H 0x58

ports/espressif/boards/m5stack_stick_c/board.c

@@ -127,6 +127,24 @@ static bool pmic_init(void) {
         return false;
     }
 
+    // Reg: 3Ah
+    // APS Low battery warning level 1: 3.695V
+    write_buf[0] = AXP192_APS_LOW_BATT_LEVEL_1;
+    write_buf[1] = AXP192_APS_LOW_BATT_VOLTAGE_3_695V;
+    rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
+    if (rc != 0) {
+        return false;
+    }
+
+    // Reg: 3Bh
+    // APS Low battery warning level 2: 3.600V
+    write_buf[0] = AXP192_APS_LOW_BATT_LEVEL_2;
+    write_buf[1] = AXP192_APS_LOW_BATT_VOLTAGE_3_600V;
+    rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
+    if (rc != 0) {
+        return false;
+    }
+
     // Reg: 82h
     // ADC all on
     write_buf[0] = AXP192_ADC_ENABLE_1;
@@ -204,7 +222,7 @@ static bool pmic_init(void) {
         return false;
     }
 
-    // Reg: 28h
+    // Reg: 26h
     // DCDC1 (ESP32 VDD): 3.350V
     write_buf[0] = AXP192_DCDC1_OUT_VOLTAGE;
     write_buf[1] = AXP192_DCDC1_OUT_VOLTAGE_3_350V;
@@ -213,6 +231,54 @@ static bool pmic_init(void) {
         return false;
     }
 
+    // Reg: 40h
+    // IRQ enable control register 1
+    write_buf[0] = AXP192_IRQ_1_ENABLE;
+    write_buf[1] = AXP192_IRQ_X_DISABLE_ALL;
+    rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
+    if (rc != 0) {
+        return false;
+    }
+
+    // Reg: 41h
+    // IRQ enable control register 2
+    write_buf[0] = AXP192_IRQ_2_ENABLE;
+    write_buf[1] = AXP192_IRQ_X_DISABLE_ALL;
+    rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
+    if (rc != 0) {
+        return false;
+    }
+
+    // Reg: 42h
+    // IRQ enable control register 3
+    // Enable power on key short and long press interrupt
+    write_buf[0] = AXP192_IRQ_2_ENABLE;
+    write_buf[1] = AXP192_IRQ_3_PEK_SHORT_PRESS |
+        AXP192_IRQ_3_PEK_LONG_PRESS;
+    rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
+    if (rc != 0) {
+        return false;
+    }
+
+    // Reg: 43h
+    // IRQ enable control register 4
+    // Enable power on key short and long press interrupt
+    write_buf[0] = AXP192_IRQ_2_ENABLE;
+    write_buf[1] = AXP192_IRQ_4_LOW_VOLTAGE_WARNING;
+    rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
+    if (rc != 0) {
+        return false;
+    }
+
+    // Reg: 44h
+    // IRQ enable control register 5
+    write_buf[0] = AXP192_IRQ_2_ENABLE;
+    write_buf[1] = AXP192_IRQ_X_DISABLE_ALL;
+    rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
+    if (rc != 0) {
+        return false;
+    }
+
     return true;
 }
 
@@ -279,7 +345,17 @@ void board_init(void) {
     }
 
     if (!display_init()) {
-        mp_printf(&mp_plat_print, "could not initialize ili9342c LCD");
+        mp_printf(&mp_plat_print, "could not initialize the display");
         return;
     }
 }
+
+bool espressif_board_reset_pin_number(gpio_num_t pin_number) {
+    // Set IR led gpio high to prevent power drain from the led
+    if (pin_number == 9) {
+        gpio_set_direction(pin_number, GPIO_MODE_DEF_OUTPUT);
+        gpio_set_level(pin_number, true);
+        return true;
+    }
+    return false;
+}