/* * Author: Dan O'Donovan * Copyright (c) 2015 Emutex Ltd. * Copyright (c) 2014 Intel Corporation. * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include #include #include #include "common.h" #include "x86/up.h" #define PLATFORM_NAME "UP" #define PLATFORM_VERSION "1.0.0" static mraa_result_t mraa_up_set_pininfo(mraa_board_t* board, int mraa_index, char* name, mraa_pincapabilities_t caps, int sysfs_pin) { if (mraa_index < board->phy_pin_count) { mraa_pininfo_t* pin_info = &board->pins[mraa_index]; strncpy(pin_info->name, name, MRAA_PIN_NAME_SIZE); pin_info->capabilities = caps; if (caps.gpio) { pin_info->gpio.pinmap = sysfs_pin; pin_info->gpio.mux_total = 0; } if (caps.i2c) { pin_info->i2c.pinmap = 1; pin_info->i2c.mux_total = 0; } if (caps.pwm) { int controller = 0; if (strncmp(name, "PWM", 3) == 0 && strlen(name) > 3 && isdigit(name[3])) controller = name[3] - '0'; pin_info->pwm.parent_id = (unsigned int) controller; pin_info->pwm.pinmap = 0; pin_info->pwm.mux_total = 0; } if (caps.spi) { pin_info->spi.mux_total = 0; } if (caps.aio) { pin_info->aio.mux_total = 0; pin_info->aio.pinmap = 0; } if (caps.uart) { pin_info->uart.mux_total = 0; } return MRAA_SUCCESS; } return MRAA_ERROR_INVALID_RESOURCE; } static mraa_result_t mraa_up_get_pin_index(mraa_board_t* board, char* name, int* pin_index) { int i; for (i = 0; i < board->phy_pin_count; ++i) { if (strncmp(name, board->pins[i].name, MRAA_PIN_NAME_SIZE) == 0) { *pin_index = i; return MRAA_SUCCESS; } } syslog(LOG_CRIT, "up: Failed to find pin name %s", name); return MRAA_ERROR_INVALID_RESOURCE; } static mraa_result_t mraa_up_aio_get_valid_fp(mraa_aio_context dev) { char file_path[64] = ""; /* * Open file Analog device input channel raw voltage file for reading. * * The UP ADC has only 1 channel, so the channel number is not included * in the filename */ snprintf(file_path, 64, "/sys/bus/iio/devices/iio:device0/in_voltage_raw"); dev->adc_in_fp = open(file_path, O_RDONLY); if (dev->adc_in_fp == -1) { syslog(LOG_ERR, "aio: Failed to open input raw file %s for reading!", file_path); return MRAA_ERROR_INVALID_RESOURCE; } return MRAA_SUCCESS; } mraa_board_t* mraa_up_board() { mraa_board_t* b = (mraa_board_t*) calloc(1, sizeof(mraa_board_t)); if (b == NULL) { return NULL; } b->platform_name = PLATFORM_NAME; b->platform_version = PLATFORM_VERSION; b->phy_pin_count = MRAA_UP_PINCOUNT; b->gpio_count = MRAA_UP_GPIOCOUNT; b->pins = (mraa_pininfo_t*) malloc(sizeof(mraa_pininfo_t) * MRAA_UP_PINCOUNT); if (b->pins == NULL) { goto error; } b->adv_func = (mraa_adv_func_t*) calloc(1, sizeof(mraa_adv_func_t)); if (b->adv_func == NULL) { free(b->pins); goto error; } b->adv_func->aio_get_valid_fp = &mraa_up_aio_get_valid_fp; mraa_up_set_pininfo(b, 0, "INVALID", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1); mraa_up_set_pininfo(b, 1, "3.3v", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1); mraa_up_set_pininfo(b, 2, "5v", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1); mraa_up_set_pininfo(b, 3, "I2C_SDA", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 1, 0, 0 }, 2); mraa_up_set_pininfo(b, 4, "5v", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1); mraa_up_set_pininfo(b, 5, "I2C_SCL", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 1, 0, 0 }, 3); mraa_up_set_pininfo(b, 6, "GND", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1); mraa_up_set_pininfo(b, 7, "ADC0", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 1, 0 }, 4); mraa_up_set_pininfo(b, 8, "UART_TX", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 1 }, 14); mraa_up_set_pininfo(b, 9, "GND", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1); mraa_up_set_pininfo(b, 10, "UART_RX", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 1 }, 15); mraa_up_set_pininfo(b, 11, "UART_RTS", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 1 }, 17); mraa_up_set_pininfo(b, 12, "I2S_CLK", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 18); mraa_up_set_pininfo(b, 13, "GPIO27", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 27); mraa_up_set_pininfo(b, 14, "GND", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1); mraa_up_set_pininfo(b, 15, "GPIO22", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 1, 0, 0 }, 22); mraa_up_set_pininfo(b, 16, "GPIO23", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 23); mraa_up_set_pininfo(b, 17, "3.3v", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1); mraa_up_set_pininfo(b, 18, "GPIO24", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 24); mraa_up_set_pininfo(b, 19, "SPI_MOSI", (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 }, 10); mraa_up_set_pininfo(b, 20, "GND", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1); mraa_up_set_pininfo(b, 21, "SPI_MISO", (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 }, 9); mraa_up_set_pininfo(b, 22, "GPIO25", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 25); mraa_up_set_pininfo(b, 23, "SPI_CLK", (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 }, 11); mraa_up_set_pininfo(b, 24, "SPI_CS0", (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 }, 8); mraa_up_set_pininfo(b, 25, "GND", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1); mraa_up_set_pininfo(b, 26, "SPI_CS1", (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 }, 7); mraa_up_set_pininfo(b, 27, "ID_SD", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 1, 0, 0 }, 0); mraa_up_set_pininfo(b, 28, "ID_SC", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 1, 0, 0 }, 1); mraa_up_set_pininfo(b, 29, "GPIO5", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 5); mraa_up_set_pininfo(b, 30, "GND", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1); mraa_up_set_pininfo(b, 31, "GPIO6", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 6); mraa_up_set_pininfo(b, 32, "PWM0", (mraa_pincapabilities_t){ 1, 1, 1, 0, 0, 0, 0, 0 }, 12); mraa_up_set_pininfo(b, 33, "PWM1", (mraa_pincapabilities_t){ 1, 1, 1, 0, 0, 0, 0, 0 }, 13); mraa_up_set_pininfo(b, 34, "GND", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1); mraa_up_set_pininfo(b, 35, "I2S_FRM", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 19); mraa_up_set_pininfo(b, 36, "UART_CTS", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 1 }, 16); mraa_up_set_pininfo(b, 37, "GPIO26", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 26); mraa_up_set_pininfo(b, 38, "I2S_DIN", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 20); mraa_up_set_pininfo(b, 39, "GND", (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 }, -1); mraa_up_set_pininfo(b, 40, "I2S_DOUT", (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }, 21); // Set number of i2c adaptors usable from userspace b->i2c_bus_count = 0; b->def_i2c_bus = 0; int i2c_bus_num; // Configure i2c adaptor #0 (default) // (For consistency with Raspberry Pi 2, use I2C1 as our primary I2C bus) i2c_bus_num = mraa_find_i2c_bus_pci("0000:00", "808622C1:01", "."); if (i2c_bus_num != -1) { int i = b->i2c_bus_count; b->i2c_bus[i].bus_id = i2c_bus_num; mraa_up_get_pin_index(b, "I2C_SDA", (int*) &(b->i2c_bus[0].sda)); mraa_up_get_pin_index(b, "I2C_SCL", (int*) &(b->i2c_bus[0].scl)); b->i2c_bus_count++; } // Configure i2c adaptor #1 // (normally reserved for accessing HAT EEPROM) i2c_bus_num = mraa_find_i2c_bus_pci("0000:00", "808622C1:00", "."); if (i2c_bus_num != -1) { int i = b->i2c_bus_count; b->i2c_bus[i].bus_id = i2c_bus_num; mraa_up_get_pin_index(b, "ID_SD", (int*) &(b->i2c_bus[1].sda)); mraa_up_get_pin_index(b, "ID_SC", (int*) &(b->i2c_bus[1].scl)); b->i2c_bus_count++; } // Configure PWM b->pwm_default_period = 500; b->pwm_max_period = 3413; b->pwm_min_period = 1; // Configure SPI #0 CS0 (default) b->spi_bus_count = 2; b->spi_bus[0].bus_id = 2; b->spi_bus[0].slave_s = 0; mraa_up_get_pin_index(b, "SPI_CS0", (int*) &(b->spi_bus[0].cs)); mraa_up_get_pin_index(b, "SPI_MOSI", (int*) &(b->spi_bus[0].mosi)); mraa_up_get_pin_index(b, "SPI_MISO", (int*) &(b->spi_bus[0].miso)); mraa_up_get_pin_index(b, "SPI_CLK", (int*) &(b->spi_bus[0].sclk)); b->def_spi_bus = 0; // Configure SPI #0 CS1 b->spi_bus[1].bus_id = 2; b->spi_bus[1].slave_s = 1; mraa_up_get_pin_index(b, "SPI_CS1", (int*) &(b->spi_bus[1].cs)); mraa_up_get_pin_index(b, "SPI_MOSI", (int*) &(b->spi_bus[1].mosi)); mraa_up_get_pin_index(b, "SPI_MISO", (int*) &(b->spi_bus[1].miso)); mraa_up_get_pin_index(b, "SPI_CLK", (int*) &(b->spi_bus[1].sclk)); // Configure UART #1 (default) b->uart_dev_count = 1; mraa_up_get_pin_index(b, "UART_RX", &(b->uart_dev[0].rx)); mraa_up_get_pin_index(b, "UART_TX", &(b->uart_dev[0].tx)); mraa_up_get_pin_index(b, "UART_CTS", &(b->uart_dev[0].cts)); mraa_up_get_pin_index(b, "UART_RTS", &(b->uart_dev[0].rts)); b->uart_dev[0].device_path = "/dev/ttyS1"; b->def_uart_dev = 0; // Configure ADC #0 b->aio_count = 1; b->adc_raw = 8; b->adc_supported = 8; b->aio_non_seq = 1; mraa_up_get_pin_index(b, "ADC0", (int*) &(b->aio_dev[0].pin)); const char* pinctrl_path = "/sys/bus/platform/drivers/up-pinctrl"; int have_pinctrl = access(pinctrl_path, F_OK) != -1; syslog(LOG_NOTICE, "up: kernel pinctrl driver %savailable", have_pinctrl ? "" : "un"); if (have_pinctrl) return b; error: syslog(LOG_CRIT, "up: Platform failed to initialise"); free(b); return NULL; }