/* * Author: Henry Bruce * 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/intel_minnow_max.h" #define PLATFORM_NAME "MinnowBoard MAX" #define I2C_BUS_COUNT 10 #define I2C_BUS_DEFAULT 7 mraa_result_t mraa_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, 7); pin_info->capabilites = caps; if (caps.gpio) pin_info->gpio.pinmap = sysfs_pin; 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 = controller; pin_info->pwm.pinmap = 0; pin_info->pwm.mux_total = 0; } return MRAA_SUCCESS; } return MRAA_ERROR_INVALID_RESOURCE; } mraa_result_t mraa_get_pin_index(mraa_board_t* board, char *name, int* pin_index) { int i; for (i = 0; i < board->phy_pin_count; ++i) { if (strcmp(name, board->pins[i].name) == 0) { *pin_index = i; return MRAA_SUCCESS; } } return MRAA_ERROR_INVALID_RESOURCE; } mraa_board_t* mraa_intel_minnow_max() { mraa_board_t* b = (mraa_board_t*) malloc(sizeof(mraa_board_t)); struct utsname running_uname; int uname_major, uname_minor, max_pins[27]; if (b == NULL) { return NULL; } b->platform_name_length = strlen(PLATFORM_NAME) + 1; b->platform_name = (char*) malloc(sizeof(char) * b->platform_name_length); if (b->platform_name == NULL) { goto error; } strncpy(b->platform_name, PLATFORM_NAME, b->platform_name_length); b->phy_pin_count = MRAA_INTEL_MINNOW_MAX_PINCOUNT; //b->gpio_count = 14; b->aio_count = 0; b->adc_raw = 0; b->adc_supported = 0; b->pins = (mraa_pininfo_t*) malloc(sizeof(mraa_pininfo_t)*MRAA_INTEL_MINNOW_MAX_PINCOUNT); if (b->pins == NULL) { goto error; } if (uname(&running_uname) != 0) { goto error; } sscanf(running_uname.release, "%d.%d", &uname_major, &uname_minor); /* if we are on Linux 3.17 or lower they use a 256 max and number the GPIOs down * if we are on 3.18 or higher (ea584595fc85e65796335033dfca25ed655cd0ed) (for now) * they start at 512 and number down, at some point this is going to change again when * GPIO moves to a radix. */ if( uname_major <= 3 && uname_minor <= 17 ){ max_pins[0] = -1; // INVALID, doesn't exist max_pins[1] = -1; // GND max_pins[2] = -1; // GND max_pins[3] = -1; // 5v max_pins[4] = -1; // 3.3v max_pins[5] = 220; // SPI_CS max_pins[6] = 225; // UART1TX max_pins[7] = 221; // SPIMISO max_pins[8] = 224; // UART1RX max_pins[9] = 222; // SPIMOSI max_pins[10] = 227; // UART1CT max_pins[11] = 223; // SPI_CLK max_pins[12] = 226; // UART1RT max_pins[13] = 243; // I2C_SCL max_pins[14] = 216; // I2S_CLK max_pins[15] = 242; // I2C_SDA max_pins[16] = 217; // I2S_FRM max_pins[17] = 229; // UART2TX max_pins[18] = 219; // I2S_DO max_pins[19] = 228; // UART2RX max_pins[20] = 218; // I2S_DI max_pins[21] = 82; // S5_0 max_pins[22] = 248; // PWM0 max_pins[23] = 83; // S5_1 max_pins[24] = 249; // PWM1 max_pins[25] = 84; // S5_4 max_pins[26] = 208; // IBL8254 } else { // This is mainly for +3.18 max_pins[0] = -1; // INVALID, doesn't exist max_pins[1] = -1; // GND max_pins[2] = -1; // GND max_pins[3] = -1; // 5v max_pins[4] = -1; // 3.3v max_pins[5] = 476; // SPI_CS max_pins[6] = 481; // UART1TX max_pins[7] = 477; // SPIMISO max_pins[8] = 480; // UART1RX max_pins[9] = 478; // SPIMOSI max_pins[10] = 483; // UART1CT max_pins[11] = 479; // SPI_CLK max_pins[12] = 484; // UART1RT max_pins[13] = 499; // I2C_SCL max_pins[14] = 472; // I2S_CLK max_pins[15] = 498; // I2C_SDA max_pins[16] = 473; // I2S_FRM max_pins[17] = 485; // UART2TX max_pins[18] = 475; // I2S_DO max_pins[19] = 484; // UART2RX max_pins[20] = 474; // I2S_DI max_pins[21] = 338; // S5_0 max_pins[22] = 504; // PWM0 max_pins[23] = 339; // S5_1 max_pins[24] = 505; // PWM1 max_pins[25] = 340; // S5_4 max_pins[26] = 464; // IBL8254 } mraa_set_pininfo(b, 0, "INVALID", (mraa_pincapabilities_t){0,0,0,0,0,0,0,0}, max_pins[0]); mraa_set_pininfo(b, 1, "GND", (mraa_pincapabilities_t){0,0,0,0,0,0,0,0}, max_pins[1]); mraa_set_pininfo(b, 2, "GND", (mraa_pincapabilities_t){0,0,0,0,0,0,0,0}, max_pins[2]); mraa_set_pininfo(b, 3, "5v", (mraa_pincapabilities_t){0,0,0,0,0,0,0,0}, max_pins[3]); mraa_set_pininfo(b, 4, "3.3v", (mraa_pincapabilities_t){1,0,0,0,0,0,0,0}, max_pins[4]); mraa_set_pininfo(b, 5, "SPI_CS", (mraa_pincapabilities_t){1,0,0,0,1,0,0,0}, max_pins[5]); mraa_set_pininfo(b, 6, "UART1TX", (mraa_pincapabilities_t){1,0,0,0,0,0,0,1}, max_pins[6]); mraa_set_pininfo(b, 7, "SPIMISO", (mraa_pincapabilities_t){1,0,0,0,1,0,0,0}, max_pins[7]); mraa_set_pininfo(b, 8, "UART1RX", (mraa_pincapabilities_t){1,0,0,0,0,0,0,1}, max_pins[8]); mraa_set_pininfo(b, 9, "SPIMOSI", (mraa_pincapabilities_t){1,0,0,0,1,0,0,0}, max_pins[9]); mraa_set_pininfo(b, 10, "UART1CT", (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, max_pins[10]); mraa_set_pininfo(b, 11, "SPI_CLK", (mraa_pincapabilities_t){1,0,0,0,0,0,0,1}, max_pins[11]); mraa_set_pininfo(b, 12, "UART1RT", (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, max_pins[12]); mraa_set_pininfo(b, 13, "I2C_SCL", (mraa_pincapabilities_t){1,0,0,0,0,1,0,0}, max_pins[13]); mraa_set_pininfo(b, 14, "I2S_CLK", (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, max_pins[14]); mraa_set_pininfo(b, 15, "I2C_SDA", (mraa_pincapabilities_t){1,0,0,0,0,1,0,0}, max_pins[15]); mraa_set_pininfo(b, 16, "I2S_FRM", (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, max_pins[16]); mraa_set_pininfo(b, 17, "UART2TX", (mraa_pincapabilities_t){1,0,0,0,0,0,0,1}, max_pins[17]); mraa_set_pininfo(b, 18, "I2S_DO", (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, max_pins[18]); mraa_set_pininfo(b, 19, "UART2RX", (mraa_pincapabilities_t){1,0,0,0,0,0,0,1}, max_pins[19]); mraa_set_pininfo(b, 20, "I2S_DI", (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, max_pins[20]); mraa_set_pininfo(b, 21, "S5_0", (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, max_pins[21]); mraa_set_pininfo(b, 22, "PWM0", (mraa_pincapabilities_t){1,0,1,0,0,0,0,0}, max_pins[22]); // Assume BIOS configured for PWM mraa_set_pininfo(b, 23, "S5_1", (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, max_pins[23]); mraa_set_pininfo(b, 24, "PWM1", (mraa_pincapabilities_t){1,0,1,0,0,0,0,0}, max_pins[24]); // Assume BIOS configured for PWM mraa_set_pininfo(b, 25, "S5_4", (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, max_pins[25]); mraa_set_pininfo(b, 26, "IBL8254", (mraa_pincapabilities_t){1,1,0,0,0,0,0,0}, max_pins[26]); // Set number of i2c adaptors // Got this from running 'i2cdetect -l' b->i2c_bus_count = I2C_BUS_COUNT; // Disable all i2c adaptors int ici; for (ici = 0; ici < b->i2c_bus_count; ici++) { b->i2c_bus[ici].bus_id = -1; } // Configure i2c adaptor #7 and make it the default int pin_index_sda, pin_index_scl; if (mraa_get_pin_index(b, "I2C_SDA", &pin_index_sda) == MRAA_SUCCESS && mraa_get_pin_index(b, "I2C_SCL", &pin_index_scl) == MRAA_SUCCESS) { b->def_i2c_bus = I2C_BUS_DEFAULT; b->i2c_bus[b->def_i2c_bus].bus_id = b->def_i2c_bus; b->i2c_bus[b->def_i2c_bus].sda = pin_index_sda; b->i2c_bus[b->def_i2c_bus].scl = pin_index_scl; } // Configure PWM b->pwm_default_period = 500; b->pwm_max_period = 1000000000; b->pwm_min_period = 1; b->spi_bus_count = 1; b->def_spi_bus = 0; b->spi_bus[0].bus_id = 0; b->spi_bus[0].slave_s = 0; b->spi_bus[0].cs = 5; b->spi_bus[0].mosi = 9; b->spi_bus[0].miso = 7; b->spi_bus[0].sclk = 11; return b; error: syslog(LOG_CRIT, "minnowmax: Platform failed to initialise"); free(b); return NULL; }