400 lines
15 KiB
C
400 lines
15 KiB
C
/*
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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 "shared-bindings/microcontroller/Pin.h"
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#include "components/driver/include/driver/gpio.h"
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#include "components/hal/include/hal/gpio_hal.h"
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#include "common-hal/microcontroller/Pin.h"
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#include "../../pmic/axp192/axp192.h"
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displayio_fourwire_obj_t board_display_obj;
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#define DELAY 0x80
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#define PMIC_POWER_SOURCE_USB 0
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#define PMIC_POWER_SOURCE_M_BUS 1
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// display init sequence according to M5Gfx
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uint8_t display_init_sequence[] = {
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0x01,DELAY,0x80, // Software reset then delay 0x80 (128ms)
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0xC8,0x03,0xFF,0x93,0x42, // Turn on the external command
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0xC0,0x02,0x12, 0x12, // Power Control 1
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0xC1,0x01,0x03, // Power Control 2
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0xC5,0x01,0xF2, // VCOM Control 1
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0xB0,0x01,0xE0, // RGB Interface SYNC Mode
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0xF6,0x03,0x01, 0x00, 0x00, // Interface control
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0XE0,0x0F,0x00,0x0C,0x11,0x04,0x11,0x08,0x37,0x89,0x4C,0x06,0x0C,0x0A,0x2E,0x34,0x0F, // Positive Gamma Correction
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0xE1,0x0F,0x00,0x0B,0x11,0x05,0x13,0x09,0x33,0x67,0x48,0x07,0x0E,0x0B,0x2E,0x33,0x0F, // Negative Gamma Correction
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0xB6,0x04,0x08,0x82,0x1D,0x04, // Display Function Control
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0x3A,0x01,0x55, // COLMOD: Pixel Format Set 16 bit
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0x21,0x00, // Display inversion ON
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0x36,0x01,0x08, // Memory Access Control: RGB order
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0x11,DELAY,0x78, // Exit Sleep then delay 0x78 (120ms)
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0x29,DELAY,0x78, // Display on then delay 0x78 (120ms)
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};
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static bool pmic_set_power_source(uint8_t source, busio_i2c_obj_t *i2c) {
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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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switch (source)
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{
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case PMIC_POWER_SOURCE_USB:
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// Set GPIO to 3.3V (when LDO OUTPUT mode is active)
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write_buf[0] = AXP192_GPIO0_LDO_VOLTAGE;
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rc = common_hal_busio_i2c_write_read(i2c, AXP192_I2C_ADDRESS, write_buf, 1, read_buf, sizeof(read_buf));
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if (rc != 0) {
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return false;
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}
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write_buf[1] = (read_buf[0] & ~AXP192_GPIO0_LDO_VOLTAGE_MASK) | AXP192_GPIO0_LDO_VOLTAGE_3_3V;
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rc = common_hal_busio_i2c_write(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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// Set GPIO0 to LDO_OUTPUT to set N_VBUSEN high
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// When N_VBUSEN is high IPSOUT do not select VBUS as source (BUS_5V)
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write_buf[0] = AXP192_GPIO0_FUNCTION;
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rc = common_hal_busio_i2c_write_read(i2c, AXP192_I2C_ADDRESS, write_buf, 1, read_buf, sizeof(read_buf));
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if (rc != 0) {
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return false;
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}
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write_buf[1] = (read_buf[0] & ~AXP192_GPIO0_FUNCTION_MASK) | AXP192_GPIO0_FUNCTION_LDO_OUTPUT;
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rc = common_hal_busio_i2c_write(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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#if M5STACK_CORE2_5V_OUTPUT_ENABLE_DEFAULT
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// Set EXTENT output high to enable 5V power boost
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write_buf[0] = AXP192_DCDC13_LDO23_CTRL;
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rc = common_hal_busio_i2c_write_read(i2c, AXP192_I2C_ADDRESS, write_buf, 1, read_buf, sizeof(read_buf));
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if (rc != 0) {
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return false;
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}
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write_buf[1] = read_buf[0] | AXP192_DCDC13_LDO23_CTRL_EXTEN;
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rc = common_hal_busio_i2c_write(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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#endif
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// Enable VBUS-IPSOUT when N_VBUSEN is high
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write_buf[0] = AXP192_VBUS_IPSOUT;
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rc = common_hal_busio_i2c_write_read(i2c, AXP192_I2C_ADDRESS, write_buf, 1, read_buf, sizeof(read_buf));
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if (rc != 0) {
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return false;
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}
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write_buf[1] = read_buf[0] & ~AXP192_VBUS_IPSOUT_IGNORE_VBUSEN;
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rc = common_hal_busio_i2c_write(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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case PMIC_POWER_SOURCE_M_BUS:
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// Enable VBUS-IPSOUT regardless of f N_VBUSEN
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write_buf[0] = AXP192_VBUS_IPSOUT;
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rc = common_hal_busio_i2c_write_read(i2c, AXP192_I2C_ADDRESS, write_buf, 1, read_buf, sizeof(read_buf));
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if (rc != 0) {
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return false;
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}
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write_buf[1] = read_buf[0] | AXP192_VBUS_IPSOUT_IGNORE_VBUSEN;
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rc = common_hal_busio_i2c_write(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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// Set EXTENT output low to disable 5V power boost
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write_buf[0] = AXP192_DCDC13_LDO23_CTRL;
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rc = common_hal_busio_i2c_write_read(i2c, AXP192_I2C_ADDRESS, write_buf, 1, read_buf, sizeof(read_buf));
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if (rc != 0) {
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return false;
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}
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write_buf[1] = read_buf[0] & ~AXP192_DCDC13_LDO23_CTRL_EXTEN;
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rc = common_hal_busio_i2c_write(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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// Set GPIO0 to float and the pull down resistor set N_VBUSEN low
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// When N_VBUSEN is low IPSOUT select VBUS as source (BUS_5V)
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write_buf[0] = AXP192_GPIO0_FUNCTION;
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rc = common_hal_busio_i2c_write_read(i2c, AXP192_I2C_ADDRESS, write_buf, 1, read_buf, sizeof(read_buf));
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if (rc != 0) {
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return false;
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}
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write_buf[1] = (read_buf[0] & ~AXP192_GPIO0_FUNCTION_MASK) | AXP192_GPIO0_FUNCTION_FLOATING;
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rc = common_hal_busio_i2c_write(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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default:
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return false;
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}
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}
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static bool pmic_init(busio_i2c_obj_t *i2c) {
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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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if (!pmic_common_init(i2c)) {
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return false;
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}
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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 enabled
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write_buf[0] = AXP192_VBUS_IPSOUT;
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write_buf[1] = AXP192_VBUS_IPSOUT_VBUS_LIMIT_CURRENT |
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AXP192_VBUS_IPSOUT_VBUS_LIMIT_CURRENT_500mA;
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rc = common_hal_busio_i2c_write(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_CHARGING_THRESH_10PERC |
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AXP192_CHARGING_CTRL1_CURRENT_360mA;
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rc = common_hal_busio_i2c_write(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: 98h
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// PWM1 frequency
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write_buf[0] = AXP192_PWM1_OUTPUT_FREQUECY;
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write_buf[1] = 0x00;
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rc = common_hal_busio_i2c_write(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: 99h
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// PWM1 duty cycle Y1
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write_buf[0] = AXP192_PWM1_DUTY_RATIO_Y1;
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write_buf[1] = 0xFF;
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rc = common_hal_busio_i2c_write(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: 9Ah
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// PWM1 duty cycle Y2
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write_buf[0] = AXP192_PWM1_DUTY_RATIO_Y2;
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write_buf[1] = 0xFF;
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rc = common_hal_busio_i2c_write(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: 93h
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// Speaker off (GPIO2 output low)
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write_buf[0] = AXP192_GPIO2_FUNCTION;
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write_buf[1] = AXP192_GPIO2_FUNCTION_LOW_OUTPUT;
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rc = common_hal_busio_i2c_write(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 (SD + TFT Logic): 3.3V
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// LDO3 (Vibration motore): Set to minimum voltage 1.8V
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write_buf[0] = AXP192_LDO23_OUT_VOLTAGE;
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write_buf[1] = AXP192_LDO23_OUT_VOLTAGE_LDO2_3_3V |
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AXP192_LDO23_OUT_VOLTAGE_LDO3_1_8V;
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rc = common_hal_busio_i2c_write(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: 26h
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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(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: 27h
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// DCDC3 (TFT backlight): 3.0V
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write_buf[0] = AXP192_DCDC3_OUT_VOLTAGE;
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write_buf[1] = AXP192_DCDC3_OUT_VOLTAGE_3_0V;
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rc = common_hal_busio_i2c_write(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:
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// DCDC1 ESP32 VDD, touch screen and 3.3V on M-Bus
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// DCDC3 LCD backlight
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// LDO2 LCD logic and SD card
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write_buf[0] = AXP192_DCDC13_LDO23_CTRL;
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write_buf[1] = AXP192_DCDC13_LDO23_CTRL_LDO2 |
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AXP192_DCDC13_LDO23_CTRL_DCDC3 |
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AXP192_DCDC13_LDO23_CTRL_DCDC1;
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rc = common_hal_busio_i2c_write(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: 92h
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// Set GPIO1 Sys green LED output as PWM
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// PWM duty cycle is set to 100% therefore sys led is off
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write_buf[0] = AXP192_GPIO1_FUNCTION;
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write_buf[1] = AXP192_GPIO1_FUNCTION_PWM1_OUTPUT;
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rc = common_hal_busio_i2c_write(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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/*
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* Select power source:
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* If there is voltage on VBUS means that BUS_5V is powered from M-BUS
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* and it can use VBUS as power source. If no voltage is present on VBUS
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* disable VBUS and rely on ACIN (USB_5V) as power source.
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*/
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write_buf[0] = AXP192_INPUT_POWER_STATE;
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rc = common_hal_busio_i2c_write_read(i2c, AXP192_I2C_ADDRESS, write_buf, 1, read_buf, sizeof(read_buf));
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if (rc != 0) {
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return false;
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}
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uint8_t powersource = (read_buf[0] & AXP192_INPUT_POWER_STATE_VBUS_AVAILABLE) ?
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PMIC_POWER_SOURCE_M_BUS : PMIC_POWER_SOURCE_USB;
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if (!pmic_set_power_source(powersource, i2c)) {
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return false;
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}
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if (!pmic_disable_all_irq(i2c)) {
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return false;
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}
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if (!pmic_clear_all_irq(i2c)) {
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return false;
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}
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if (!pmic_enable_power_key_press_irq(i2c)) {
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return false;
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}
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if (!pmic_enable_low_battery_irq(i2c)) {
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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 = common_hal_board_create_spi(0);
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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_GPIO15, // DC
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&pin_GPIO5, // CS
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NULL, // RST
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32000000, // 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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320, // width (after rotation)
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240, // height (after rotation)
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0, // column start
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0, // 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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61, // native_frames_per_second
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true, // 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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busio_i2c_obj_t *internal_i2c = common_hal_board_create_i2c(0);
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if (!pmic_init(internal_i2c)) {
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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 the display");
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return;
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}
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}
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