286 lines
10 KiB
C
286 lines
10 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2023 CDarius
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "supervisor/board.h"
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#include "mpconfigboard.h"
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#include "shared-bindings/busio/SPI.h"
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#include "shared-bindings/busio/I2C.h"
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#include "shared-bindings/displayio/FourWire.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "shared-module/displayio/__init__.h"
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#include "shared-module/displayio/mipi_constants.h"
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#include "shared-bindings/board/__init__.h"
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#include "axp192.h"
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// display init sequence according to adafruit_st7735r.py library
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uint8_t display_init_sequence[] = {
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0x01,0x80,0x96, // SWRESET and Delay 150ms
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0x11,0x80,0xff, // SLPOUT and Delay
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0xb1,0x03,0x01,0x2C,0x2D, // _FRMCTR1
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0xb2,0x03,0x01,0x2C,0x2D, // _FRMCTR2
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0xb3,0x06,0x01,0x2C,0x2D,0x01,0x2C,0x2D, // _FRMCTR3
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0xb4,0x01,0x07, // _INVCTR line inversion
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0xc0,0x03,0xa2,0x02,0x84, // _PWCTR1 GVDD = 4.7V, 1.0uA
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0xc1,0x01,0xc5, // _PWCTR2 VGH=14.7V, VGL=-7.35V
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0xc2,0x02,0x0a,0x00, // _PWCTR3 Opamp current small, Boost frequency
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0xc3,0x02,0x8a,0x2a,
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0xc4,0x02,0x8a,0xee,
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0xc5,0x01,0x0e, // _VMCTR1 VCOMH = 4V, VOML = -1.1V
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0x36,0x01,0xc8, // MADCTL Rotate display
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0x21,0x00, // _INVON
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0x3a,0x01,0x05, // COLMOD - 16bit color
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0xe0,0x10,0x02,0x1c,0x07,0x12,0x37,0x32,0x29,0x2d,0x29,0x25,0x2B,0x39,0x00,0x01,0x03,0x10, // _GMCTRP1 Gamma
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0xe1,0x10,0x03,0x1d,0x07,0x06,0x2E,0x2C,0x29,0x2D,0x2E,0x2E,0x37,0x3F,0x00,0x00,0x02,0x10, // _GMCTRN1
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0x13,0x80,0x0a, // _NORON
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0x29,0x80,0x64 // _DISPON
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};
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static bool pmic_init(void) {
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int rc;
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// uint8_t read_buf[1];
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uint8_t write_buf[2];
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busio_i2c_obj_t *internal_i2c = common_hal_board_create_i2c(0);
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// Reg: 30h
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// The VBUS-IPSOUT path can be selected to be opened regardless of the status of N_VBUSEN
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// VBUS VHOLD pressure limit control disabled
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// VBUS current limit control disabled
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write_buf[0] = AXP192_VBUS_IPSOUT;
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write_buf[1] = AXP192_VBUS_IPSOUT_IGNORE_VBUSEN;
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rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
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if (rc != 0) {
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return false;
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}
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// Reg: 31h
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// VOFF Shutdown voltage setting ( 3.0V )
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write_buf[0] = AXP192_POWER_OFF_VOLTAGE;
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write_buf[1] = AXP192_POWER_OFF_VOLTAGE_3_0V;
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rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
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if (rc != 0) {
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return false;
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}
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// Reg: 33h
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// Charge function enable control bit, including internal and external channels
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// Charging target voltage: 4.2V
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// Charging end current: End charging when charging current is less than 10% setting
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// Internal path charging current: 100mA
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write_buf[0] = AXP192_CHARGING_CTRL1;
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write_buf[1] = AXP192_CHARGING_CTRL1_ENABLE |
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AXP192_CHARGING_CTRL1_VOLTAGE_4_20V |
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AXP192_CHARGING_CTRL1_CURRENT_100mA;
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rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
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if (rc != 0) {
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return false;
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}
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// Reg: 35h
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// Enable RTC battery charge: 3.0V, 200uA
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write_buf[0] = AXP192_BACKUP_BATT;
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write_buf[1] = AXP192_BACKUP_BATT_CHARGING_ENABLE |
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AXP192_BACKUP_BATT_CHARGING_VOLTAGE_3_0V |
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AXP192_BACKUP_BATT_CHARGING_CURRENT_200uA;
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rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
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if (rc != 0) {
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return false;
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}
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// Reg: 36h
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// Power on: Short press 128ms
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// Power off: Long press 1s
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// Power OK delay 64ms
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// Power off delay 4s
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write_buf[0] = AXP192_PEK;
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write_buf[1] = AXP192_PEK_SHORT_PRESS_128mS |
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AXP192_PEK_LONG_PRESS_1_0S |
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AXP192_PEK_LONG_PRESS_POWER_OFF |
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AXP192_PEK_PWROK_DELAY_64mS |
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AXP192_PEK_POWER_OFF_TIME_4S;
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rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
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if (rc != 0) {
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return false;
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}
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// Reg: 82h
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// ADC all on
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write_buf[0] = AXP192_ADC_ENABLE_1;
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write_buf[1] = AXP192_ADC_ENABLE_1_BATT_VOL |
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AXP192_ADC_ENABLE_1_BATT_CUR |
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AXP192_ADC_ENABLE_1_ACIN_VOL |
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AXP192_ADC_ENABLE_1_ACIN_CUR |
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AXP192_ADC_ENABLE_1_VBUS_VOL |
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AXP192_ADC_ENABLE_1_VBUS_CUR |
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AXP192_ADC_ENABLE_1_APS_VOL |
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AXP192_ADC_ENABLE_1_TS_PIN;
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rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
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if (rc != 0) {
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return false;
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}
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// Reg: 83h
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// ADC temperature on
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write_buf[0] = AXP192_ADC_ENABLE_2;
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write_buf[1] = AXP192_ADC_ENABLE_2_TEMP_MON;
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rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
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if (rc != 0) {
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return false;
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}
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// Reg: 84h
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// ADC 25Hz
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write_buf[0] = AXP192_ADC_TS;
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write_buf[1] = AXP192_ADC_TS_SAMPLE_25HZ |
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AXP192_ADC_TS_OUT_CUR_80uA |
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AXP192_ADC_TS_PIN_OUT_SAVE_ENG;
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rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
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if (rc != 0) {
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return false;
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}
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// Reg: 90h
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// GPIO0(LDOio0) floating
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write_buf[0] = AXP192_GPIO0_FUNCTION;
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write_buf[1] = AXP192_GPIO0_FUNCTION_FLOATING;
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rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
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if (rc != 0) {
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return false;
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}
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// Reg: 91h
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// GPIO0(LDOio0) 2.8V
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write_buf[0] = AXP192_GPIO0_LDO_VOLTAGE;
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write_buf[1] = AXP192_GPIO0_LDO_VOLTAGE_2_8V;
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rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
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if (rc != 0) {
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return false;
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}
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// Reg: 28h
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// LDO2 (TFT backlight): 2.8V
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// LDO3 (TFT logic): 3.0V
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write_buf[0] = AXP192_LDO23_OUT_VOLTAGE;
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write_buf[1] = AXP192_LDO23_OUT_VOLTAGE_LDO2_2_8V |
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AXP192_LDO23_OUT_VOLTAGE_LDO3_3_0V;
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rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
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if (rc != 0) {
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return false;
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}
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// Reg: 12h
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// Enable CTRL_EXTEN, DCDC1, LDO2 and LDO3
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write_buf[0] = AXP192_DCDC13_LDO23_CTRL;
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write_buf[1] = AXP192_DCDC13_LDO23_CTRL_EXTEN |
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AXP192_DCDC13_LDO23_CTRL_LDO3 |
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AXP192_DCDC13_LDO23_CTRL_LDO2 |
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AXP192_DCDC13_LDO23_CTRL_DCDC1;
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rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
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if (rc != 0) {
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return false;
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}
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// Reg: 28h
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// DCDC1 (ESP32 VDD): 3.350V
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write_buf[0] = AXP192_DCDC1_OUT_VOLTAGE;
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write_buf[1] = AXP192_DCDC1_OUT_VOLTAGE_3_350V;
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rc = common_hal_busio_i2c_write(internal_i2c, AXP192_I2C_ADDRESS, write_buf, sizeof(write_buf));
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if (rc != 0) {
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return false;
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}
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return true;
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}
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static bool display_init(void) {
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busio_spi_obj_t *spi = &displays[0].fourwire_bus.inline_bus;
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common_hal_busio_spi_construct(spi, &pin_GPIO13, &pin_GPIO15, NULL, false);
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common_hal_busio_spi_never_reset(spi);
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displayio_fourwire_obj_t *bus = &displays[0].fourwire_bus;
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bus->base.type = &displayio_fourwire_type;
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common_hal_displayio_fourwire_construct(
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bus,
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spi,
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&pin_GPIO23, // DC
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&pin_GPIO5, // CS
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&pin_GPIO18, // RST
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10000000, // baudrate
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0, // polarity
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0 // phase
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);
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displayio_display_obj_t *display = &displays[0].display;
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display->base.type = &displayio_display_type;
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common_hal_displayio_display_construct(
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display,
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bus,
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80, // width (after rotation)
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160, // height (after rotation)
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26, // column start
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1, // row start
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0, // rotation
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16, // color depth
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false, // grayscale
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false, // pixels in a byte share a row. Only valid for depths < 8
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1, // bytes per cell. Only valid for depths < 8
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false, // reverse_pixels_in_byte. Only valid for depths < 8
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true, // reverse_pixels_in_word
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MIPI_COMMAND_SET_COLUMN_ADDRESS, // set column command
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MIPI_COMMAND_SET_PAGE_ADDRESS, // set row command
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MIPI_COMMAND_WRITE_MEMORY_START, // write memory command
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display_init_sequence,
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sizeof(display_init_sequence),
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NULL, // backlight pin
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NO_BRIGHTNESS_COMMAND,
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1.0f, // brightness
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false, // single_byte_bounds
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false, // data_as_commands
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true, // auto_refresh
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80, // native_frames_per_second
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false, // backlight_on_high
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false, // SH1107_addressing
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50000 // backlight pwm frequency
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);
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return true;
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}
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void board_init(void) {
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if (!pmic_init()) {
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mp_printf(&mp_plat_print, "could not initialize axp192 pmic\n");
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return;
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}
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if (!display_init()) {
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mp_printf(&mp_plat_print, "could not initialize ili9342c LCD");
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return;
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}
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}
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