174 lines
7.2 KiB
C
174 lines
7.2 KiB
C
/*
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* Author: Brian <brian@vamrs.com>
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* Copyright (c) 2019 Vamrs Corporation.
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*
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* SPDX-License-Identifier: MIT
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*/
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#include <mraa/common.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/mman.h>
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#include "arm/rockpi4.h"
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#include "common.h"
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#define DT_BASE "/proc/device-tree"
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/*
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* "Radxa ROCK Pi 4" is the model name on stock 5.x kernels
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* "ROCK PI 4A", "ROCK PI 4B" and "ROCK PI 4C" is used on Radxa 4.4 kernel
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* so we search for the string below by ignoring case
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*/
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#define PLATFORM_NAME_ROCK_PI4 "ROCK Pi 4"
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#define PLATFORM_NAME_ROCK_PI4_2 "ROCK PI 4"
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#define PLATFORM_NAME_ROCK_PI4_3 "ROCK 4"
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#define MAX_SIZE 64
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const char* rockpi4_serialdev[MRAA_ROCKPI4_UART_COUNT] = { "/dev/ttyS2", "/dev/ttyS4" };
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void
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mraa_rockpi4_pininfo(mraa_board_t* board, int index, int sysfs_pin, mraa_pincapabilities_t pincapabilities_t, char* fmt, ...)
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{
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va_list arg_ptr;
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if (index > board->phy_pin_count)
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return;
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mraa_pininfo_t* pininfo = &board->pins[index];
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va_start(arg_ptr, fmt);
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vsnprintf(pininfo->name, MRAA_PIN_NAME_SIZE, fmt, arg_ptr);
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if( pincapabilities_t.gpio == 1 ) {
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pininfo->gpio.gpio_chip = sysfs_pin / 32;
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pininfo->gpio.gpio_line = sysfs_pin % 32;
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}
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pininfo->capabilities = pincapabilities_t;
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va_end(arg_ptr);
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pininfo->gpio.pinmap = sysfs_pin;
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pininfo->gpio.mux_total = 0;
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}
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mraa_board_t*
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mraa_rockpi4()
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{
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mraa_board_t* b = (mraa_board_t*) calloc(1, sizeof(mraa_board_t));
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if (b == NULL) {
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return NULL;
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}
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b->adv_func = (mraa_adv_func_t*) calloc(1, sizeof(mraa_adv_func_t));
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if (b->adv_func == NULL) {
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free(b);
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return NULL;
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}
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// pin mux for buses are setup by default by kernel so tell mraa to ignore them
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b->no_bus_mux = 1;
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b->phy_pin_count = MRAA_ROCKPI4_PIN_COUNT + 1;
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if (mraa_file_exist(DT_BASE "/model")) {
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// We are on a modern kernel, great!!!!
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if (mraa_file_contains(DT_BASE "/model", PLATFORM_NAME_ROCK_PI4) ||
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mraa_file_contains(DT_BASE "/model", PLATFORM_NAME_ROCK_PI4_2) ||
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mraa_file_contains(DT_BASE "/model", PLATFORM_NAME_ROCK_PI4_3)
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) {
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b->platform_name = PLATFORM_NAME_ROCK_PI4;
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b->uart_dev[0].device_path = (char*) rockpi4_serialdev[0];
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b->uart_dev[1].device_path = (char*) rockpi4_serialdev[1];
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}
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}
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// UART
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b->uart_dev_count = MRAA_ROCKPI4_UART_COUNT;
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b->def_uart_dev = 0;
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b->uart_dev[0].index = 2;
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b->uart_dev[1].index = 4;
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// I2C
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if (strncmp(b->platform_name, PLATFORM_NAME_ROCK_PI4, MAX_SIZE) == 0) {
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b->i2c_bus_count = MRAA_ROCKPI4_I2C_COUNT;
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b->def_i2c_bus = 0;
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b->i2c_bus[0].bus_id = 7;
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b->i2c_bus[1].bus_id = 2;
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b->i2c_bus[2].bus_id = 6;
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}
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// SPI
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b->spi_bus_count = MRAA_ROCKPI4_SPI_COUNT;
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b->def_spi_bus = 0;
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b->spi_bus[0].bus_id = 1;
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b->spi_bus[1].bus_id = 2;
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b->pwm_dev_count = MRAA_ROCKPI4_PWM_COUNT;
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b->pwm_default_period = 500;
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b->pwm_max_period = 2147483;
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b->pwm_min_period = 1;
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b->pins = (mraa_pininfo_t*) malloc(sizeof(mraa_pininfo_t) * b->phy_pin_count);
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if (b->pins == NULL) {
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free(b->adv_func);
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free(b);
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return NULL;
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}
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b->pins[11].pwm.parent_id = 0;
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b->pins[11].pwm.mux_total = 0;
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b->pins[11].pwm.pinmap = 0;
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b->pins[13].pwm.parent_id = 1;
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b->pins[13].pwm.mux_total = 0;
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b->pins[13].pwm.pinmap = 0;
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b->aio_count = MRAA_ROCKPI4_AIO_COUNT;
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b->adc_raw = 10;
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b->adc_supported = 10;
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b->aio_dev[0].pin = 26;
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b->aio_non_seq = 1;
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b->chardev_capable = 1;
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mraa_rockpi4_pininfo(b, 0, -1, (mraa_pincapabilities_t){0,0,0,0,0,0,0,0}, "INVALID");
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mraa_rockpi4_pininfo(b, 1, -1, (mraa_pincapabilities_t){1,0,0,0,0,0,0,0}, "3V3");
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mraa_rockpi4_pininfo(b, 2, -1, (mraa_pincapabilities_t){1,0,0,0,0,0,0,0}, "5V");
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mraa_rockpi4_pininfo(b, 3, 71, (mraa_pincapabilities_t){1,1,0,0,0,1,0,0}, "SDA7");
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mraa_rockpi4_pininfo(b, 4, -1, (mraa_pincapabilities_t){1,0,0,0,0,0,0,0}, "5V");
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mraa_rockpi4_pininfo(b, 5, 72, (mraa_pincapabilities_t){1,1,0,0,0,1,0,0}, "SCL7");
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mraa_rockpi4_pininfo(b, 6, -1, (mraa_pincapabilities_t){1,0,0,0,0,0,0,0}, "GND");
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mraa_rockpi4_pininfo(b, 7, 75, (mraa_pincapabilities_t){1,1,0,0,1,0,0,0}, "SPI2_CLK");
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mraa_rockpi4_pininfo(b, 8, 148, (mraa_pincapabilities_t){1,1,0,0,0,0,0,1}, "TXD2");
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mraa_rockpi4_pininfo(b, 9, -1, (mraa_pincapabilities_t){1,0,0,0,0,0,0,0}, "GND");
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mraa_rockpi4_pininfo(b, 10, 147, (mraa_pincapabilities_t){1,1,0,0,0,0,0,1}, "RXD2");
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mraa_rockpi4_pininfo(b, 11, 146, (mraa_pincapabilities_t){1,1,1,0,0,0,0,0}, "PWM0");
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mraa_rockpi4_pininfo(b, 12, 131, (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, "GPIO4_A3");
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mraa_rockpi4_pininfo(b, 13, 150, (mraa_pincapabilities_t){1,1,1,0,0,0,0,0}, "PWM1");
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mraa_rockpi4_pininfo(b, 14, -1, (mraa_pincapabilities_t){1,0,0,0,0,0,0,0}, "GND");
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mraa_rockpi4_pininfo(b, 15, 149, (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, "GPIO4_C5");
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mraa_rockpi4_pininfo(b, 16, 154, (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, "GPIO4_D2");
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mraa_rockpi4_pininfo(b, 17, -1, (mraa_pincapabilities_t){1,0,0,0,0,0,0,0}, "3V3");
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mraa_rockpi4_pininfo(b, 18, 156, (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, "GPIO4_D4");
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mraa_rockpi4_pininfo(b, 19, 40, (mraa_pincapabilities_t){1,1,0,0,1,0,0,1}, "SPI1TX,TXD4");
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mraa_rockpi4_pininfo(b, 20, -1, (mraa_pincapabilities_t){1,0,0,0,0,0,0,0}, "GND");
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mraa_rockpi4_pininfo(b, 21, 39, (mraa_pincapabilities_t){1,1,0,0,1,0,0,1}, "SPI1RX,RXD4");
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mraa_rockpi4_pininfo(b, 22, 157, (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, "GPIO4_D5");
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mraa_rockpi4_pininfo(b, 23, 41, (mraa_pincapabilities_t){1,1,0,0,1,0,0,0}, "SPI1CLK");
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mraa_rockpi4_pininfo(b, 24, 42, (mraa_pincapabilities_t){1,1,0,0,1,0,0,0}, "SPI1CS");
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mraa_rockpi4_pininfo(b, 25, -1, (mraa_pincapabilities_t){1,0,0,0,0,0,0,0}, "GND");
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mraa_rockpi4_pininfo(b, 26, -1, (mraa_pincapabilities_t){1,0,0,0,0,0,1,0}, "ADC_IN0");
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mraa_rockpi4_pininfo(b, 27, 64, (mraa_pincapabilities_t){1,1,0,0,0,1,0,0}, "SDA2");
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mraa_rockpi4_pininfo(b, 28, 65, (mraa_pincapabilities_t){1,1,0,0,0,1,0,0}, "SCL2");
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mraa_rockpi4_pininfo(b, 29, 74, (mraa_pincapabilities_t){1,1,0,0,1,1,0,0}, "SCL6,SPI2RX");
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mraa_rockpi4_pininfo(b, 30, -1, (mraa_pincapabilities_t){1,0,0,0,0,0,0,0}, "GND");
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mraa_rockpi4_pininfo(b, 31, 73, (mraa_pincapabilities_t){1,1,0,0,1,1,0,0}, "SDA6,SPI2TX");
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mraa_rockpi4_pininfo(b, 32, 112, (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, "GPIO3_C0");
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mraa_rockpi4_pininfo(b, 33, 76, (mraa_pincapabilities_t){1,1,0,0,1,0,0,0}, "SPI2CS");
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mraa_rockpi4_pininfo(b, 34, -1, (mraa_pincapabilities_t){1,0,0,0,0,0,0,0}, "GND");
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mraa_rockpi4_pininfo(b, 35, 133, (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, "GPIO4_A5");
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mraa_rockpi4_pininfo(b, 36, 132, (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, "GPIO4_A4");
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mraa_rockpi4_pininfo(b, 37, 158, (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, "GPIO4_D6");
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mraa_rockpi4_pininfo(b, 38, 134, (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, "GPIO4_A6");
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mraa_rockpi4_pininfo(b, 39, -1, (mraa_pincapabilities_t){1,0,0,0,0,0,0,0}, "GND");
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mraa_rockpi4_pininfo(b, 40, 135, (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, "GPIO4_A7");
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return b;
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}
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