mraa_result_t
mraa_beaglebone_spi_init_pre(int index)
{
mraa_result_t ret = MRAA_ERROR_NO_RESOURCES;
char devpath[MAX_SIZE];
char overlay[MAX_SIZE];
char* capepath = NULL;
int deviceindex = 0;
// The first initialized SPI devices always gets the bus id 1
// So we need to track down correct mapping and adjust the bus_id field
if ((index == 0) && mraa_link_targets("/sys/class/spidev/spidev1.0", "48030000"))
deviceindex = 1;
if ((index == 0) && mraa_link_targets("/sys/class/spidev/spidev2.0", "48030000"))
deviceindex = 2;
if ((index == 1) && mraa_link_targets("/sys/class/spidev/spidev1.0", "481a0000"))
deviceindex = 1;
if ((index == 1) && mraa_link_targets("/sys/class/spidev/spidev2.0", "481a0000"))
deviceindex = 2;
if ((deviceindex == 0) && mraa_file_exist("/sys/class/spidev/spidev1.0"))
deviceindex = 2;
if (deviceindex == 0)
deviceindex = 1;
sprintf(devpath, "/dev/spidev%u.0", deviceindex);
if (!mraa_file_exist(devpath)) {
capepath = mraa_file_unglob(SYSFS_DEVICES_CAPEMGR_SLOTS);
if (capepath == NULL) {
syslog(LOG_ERR, "spi: Could not find CapeManager");
return ret;
}
FILE* fh;
fh = fopen(capepath, "w");
if (fh == NULL) {
free(capepath);
syslog(LOG_ERR, "spi: Failed to open %s for writing, check access rights for user", capepath);
return ret;
}
if (fprintf(fh, SPI_OVERLAY, index) < 0) {
syslog(LOG_ERR,
"spi: Failed to write to CapeManager, check that /lib/firmware/%s exists",
SPI_OVERLAY, index);
}
fclose(fh);
free(capepath);
}
if (mraa_file_exist(devpath)) {
plat->spi_bus[index].bus_id = deviceindex;
ret = MRAA_SUCCESS;
} else {
syslog(LOG_ERR, "spi: Device not initialized, check that /lib/firmware/%s exists", SPI_OVERLAY, index);
syslog(LOG_ERR, "spi: Check http://elinux.org/BeagleBone_Black_Enable_SPIDEV for details");
}
return ret;
}
mraa_board_t*
mraa_banana()
{
mraa_board_t* b = (mraa_board_t*) calloc(1, sizeof(mraa_board_t));
if (b == NULL) {
return NULL;
}
platform_detected = 0;
int i2c2 = -1;
int spi0 = -1;
int uart2 = -1;
int uart3 = -1;
int uart4 = -1;
int uart7 = -1;
if (mraa_file_exist(DT_BASE "/model")) {
// We are on a modern kernel, great!!!!
if (mraa_file_contains(DT_BASE "/model", "Banana Pro")) {
b->platform_name = PLATFORM_NAME_BANANA_PRO;
platform_detected = PLATFORM_BANANA_PRO;
b->phy_pin_count = MRAA_BANANA_PRO_PINCOUNT;
}
if (mraa_file_contains(DT_BASE "/model", "Banana Pi")) {
b->platform_name = PLATFORM_NAME_BANANA_PI;
platform_detected = PLATFORM_BANANA_PI;
b->phy_pin_count = MRAA_BANANA_PI_PINCOUNT;
}
if (mraa_file_contains(DT_BASE "/soc@01c00000/i2c@01c2b400/status", "okay")) {
i2c2 = 1;
}
if (mraa_file_contains(DT_BASE "/soc@01c00000/spi@01c05000/status", "okay")) {
spi0 = 1;
}
} else {
if (mraa_file_exist("/sys/class/leds/green:ph24:led1")) {
if (mraa_file_exist("/sys/class/leds/blue:pg02:led2")) {
b->platform_name = PLATFORM_NAME_BANANA_PRO;
platform_detected = PLATFORM_BANANA_PRO;
b->phy_pin_count = MRAA_BANANA_PRO_PINCOUNT;
} else {
b->platform_name = PLATFORM_NAME_BANANA_PI;
platform_detected = PLATFORM_BANANA_PI;
b->phy_pin_count = MRAA_BANANA_PI_PINCOUNT;
}
if (mraa_file_exist("/sys/class/i2c-dev/i2c-2")) {
i2c2 = 1;
}
if (mraa_file_exist("/sys/class/spi_master/spi0")) {
spi0 = 1;
}
}
}
if (platform_detected == 0) {
free(b);
syslog(LOG_ERR, "mraa: Could not detect Banana Pi or Banana Pro");
return NULL;
}
int devnum;
for (devnum = 0; devnum < 8; devnum++) {
if (mraa_link_targets(seriallink[devnum], "1c28800")) {
uart2 = devnum;
}
if (mraa_link_targets(seriallink[devnum], "1c28c00")) {
uart3 = devnum;
}
if (mraa_link_targets(seriallink[devnum], "1c29000")) {
uart4 = devnum;
}
if (mraa_link_targets(seriallink[devnum], "1c29c00")) {
uart7 = devnum;
}
}
for (devnum = 0; devnum < 5; devnum++) {
if (mraa_link_targets(i2clink[devnum], "1c2b400")) {
i2c2 = devnum;
}
}
for (devnum = 0; devnum < 4; devnum++) {
if (mraa_link_targets(spilink[devnum], "1c05000")) {
spi0 = devnum;
}
}
b->adv_func = (mraa_adv_func_t*) calloc(1, sizeof(mraa_adv_func_t));
if (b->adv_func == NULL) {
free(b);
return NULL;
}
b->pins = (mraa_pininfo_t*) calloc(b->phy_pin_count, sizeof(mraa_pininfo_t));
if (b->pins == NULL) {
free(b->adv_func);
free(b);
return NULL;
}
b->adv_func->spi_init_pre = &mraa_banana_spi_init_pre;
b->adv_func->i2c_init_pre = &mraa_banana_i2c_init_pre;
b->adv_func->gpio_mmap_setup = &mraa_banana_mmap_setup;
strncpy(b->pins[0].name, "INVALID", MRAA_PIN_NAME_SIZE);
b->pins[0].capabilities = (mraa_pincapabilities_t){ 0, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[1].name, "3V3", MRAA_PIN_NAME_SIZE);
b->pins[1].capabilities = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[2].name, "5V", MRAA_PIN_NAME_SIZE);
b->pins[2].capabilities = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
if (i2c2 == 1) {
strncpy(b->pins[3].name, "TWI2-SDA", MRAA_PIN_NAME_SIZE); // PB21 Pin53 TWI2-SDA
b->pins[3].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 1, 0, 0 };
} else {
strncpy(b->pins[3].name, "PB21", MRAA_PIN_NAME_SIZE); // PB21 Pin53 TWI2-SDA
b->pins[3].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
}
b->pins[3].gpio.pinmap = 53;
strncpy(b->pins[4].name, "5V", MRAA_PIN_NAME_SIZE);
b->pins[4].capabilities = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
if (i2c2 == 1) {
strncpy(b->pins[5].name, "TWI2-SCK", MRAA_PIN_NAME_SIZE); // PB20 Pin52 TWI2-SCK
b->pins[5].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 1, 0, 0 };
} else {
strncpy(b->pins[5].name, "PB20", MRAA_PIN_NAME_SIZE); // PB20 Pin52 TWI2-SCK
b->pins[5].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
}
b->pins[5].gpio.pinmap = 52;
strncpy(b->pins[6].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[6].capabilities = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
if (platform_detected == PLATFORM_BANANA_PRO) {
strncpy(b->pins[7].name, "PH02", MRAA_PIN_NAME_SIZE); // PH2 Pin226
b->pins[7].gpio.pinmap = 226;
} else {
strncpy(b->pins[7].name, "PI03", MRAA_PIN_NAME_SIZE); // PI3 Pin259 PWM
b->pins[7].gpio.pinmap = 259;
}
b->pins[7].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
if (platform_detected == PLATFORM_BANANA_PRO) {
strncpy(b->pins[8].name, "UART4_TX", MRAA_PIN_NAME_SIZE); // PH4 Pin228 UART4_TX
b->pins[8].gpio.pinmap = 228;
} else {
strncpy(b->pins[8].name, "UART3_TX", MRAA_PIN_NAME_SIZE); // PH0 Pin224 UART3_TX
b->pins[8].gpio.pinmap = 224;
}
b->pins[8].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 1 };
strncpy(b->pins[9].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[9].capabilities = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
if (platform_detected == PLATFORM_BANANA_PRO) {
strncpy(b->pins[10].name, "UART4_RX", MRAA_PIN_NAME_SIZE); // PH5 Pin229 UART4_RX
b->pins[10].gpio.pinmap = 229;
} else {
strncpy(b->pins[10].name, "UART3_RX", MRAA_PIN_NAME_SIZE); // PH1 Pin225 UART3_RX
b->pins[10].gpio.pinmap = 225;
}
b->pins[10].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 1 };
strncpy(b->pins[11].name, "PI19", MRAA_PIN_NAME_SIZE); // PI19 Pin275 IO+UART2_RX
b->pins[11].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 1 };
b->pins[11].gpio.pinmap = 275;
if (platform_detected == PLATFORM_BANANA_PRO) {
strncpy(b->pins[12].name, "PI03", MRAA_PIN_NAME_SIZE); // PI3 Pin259 PWM
b->pins[12].gpio.pinmap = 259;
} else {
strncpy(b->pins[12].name, "PH02", MRAA_PIN_NAME_SIZE); // PH2 Pin226
b->pins[12].gpio.pinmap = 226;
}
b->pins[12].capabilities = (mraa_pincapabilities_t){ 1, 1, 1, 0, 0, 0, 0, 0 };
strncpy(b->pins[13].name, "PI18", MRAA_PIN_NAME_SIZE); // PI18 Pin274 UART2_TX
b->pins[13].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 1 };
b->pins[13].gpio.pinmap = 274;
strncpy(b->pins[14].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[14].capabilities = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[15].name, "PI17", MRAA_PIN_NAME_SIZE); // PI17 Pin273 UART2_CTS
b->pins[15].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[15].gpio.pinmap = 273;
strncpy(b->pins[16].name, "PH20", MRAA_PIN_NAME_SIZE); // PH20 Pin 244 CAN_TX
b->pins[16].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[16].gpio.pinmap = 244;
strncpy(b->pins[17].name, "3V3", MRAA_PIN_NAME_SIZE);
b->pins[17].capabilities = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[18].name, "PH21", MRAA_PIN_NAME_SIZE); // PH21 Pin245 CAN_RX
b->pins[18].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[18].gpio.pinmap = 245;
strncpy(b->pins[19].name, "SPI0MOSI", MRAA_PIN_NAME_SIZE); // PI12 SPI0
b->pins[19].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 };
b->pins[19].gpio.pinmap = 268;
strncpy(b->pins[20].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[20].capabilities = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[21].name, "SPI0MISO", MRAA_PIN_NAME_SIZE); // PI13 SPI0
b->pins[21].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 };
b->pins[21].gpio.pinmap = 269;
strncpy(b->pins[22].name, "PI16", MRAA_PIN_NAME_SIZE); // PI16 UART2_RTS
b->pins[22].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 1 };
b->pins[22].gpio.pinmap = 272;
strncpy(b->pins[23].name, "SPI0CLK", MRAA_PIN_NAME_SIZE); // PI11 SPI0
b->pins[23].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 };
b->pins[23].gpio.pinmap = 267;
strncpy(b->pins[24].name, "SPI0CS0", MRAA_PIN_NAME_SIZE); // PI10 SPI0
b->pins[24].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 };
b->pins[24].gpio.pinmap = 266;
strncpy(b->pins[25].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[25].capabilities = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[26].name, "SPI0CS1", MRAA_PIN_NAME_SIZE); // PI14 SPI0
b->pins[26].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 1, 0, 0, 0 };
b->pins[26].gpio.pinmap = 270;
if (platform_detected == PLATFORM_BANANA_PI) {
strncpy(b->pins[27].name, "5V", MRAA_PIN_NAME_SIZE);
b->pins[27].capabilities = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[28].name, "3V3", MRAA_PIN_NAME_SIZE);
b->pins[28].capabilities = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[29].name, "PH05", MRAA_PIN_NAME_SIZE); // PH5
b->pins[29].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[29].gpio.pinmap = 229;
strncpy(b->pins[30].name, "PI21", MRAA_PIN_NAME_SIZE); // PI21 UART7_RX
b->pins[30].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 1 };
b->pins[30].gpio.pinmap = 277;
strncpy(b->pins[31].name, "PH03", MRAA_PIN_NAME_SIZE); // PH3
b->pins[31].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[31].gpio.pinmap = 227;
strncpy(b->pins[32].name, "PI20", MRAA_PIN_NAME_SIZE); // PI20 UART7_TX
b->pins[32].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 1 };
b->pins[32].gpio.pinmap = 276;
strncpy(b->pins[33].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[33].capabilities = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[34].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[34].capabilities = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
}
if (platform_detected == PLATFORM_BANANA_PRO) {
strncpy(b->pins[27].name, "HAT_SDA", MRAA_PIN_NAME_SIZE); // PI1 TWI3-SDA i2c3
b->pins[27].capabilities = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
b->pins[27].gpio.pinmap = 257;
strncpy(b->pins[28].name, "HAT_SCK", MRAA_PIN_NAME_SIZE); // PI0 TWI3-SCK i2c3
b->pins[28].capabilities = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
b->pins[28].gpio.pinmap = 256;
strncpy(b->pins[29].name, "PB03", MRAA_PIN_NAME_SIZE); // PB3 IR0_TX/SPDIF_MCLK
b->pins[29].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[29].gpio.pinmap = 35;
strncpy(b->pins[30].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[30].capabilities = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[31].name, "PI21", MRAA_PIN_NAME_SIZE); // PI21 UART7_RX
b->pins[31].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 1 };
b->pins[31].gpio.pinmap = 277;
strncpy(b->pins[32].name, "PI20", MRAA_PIN_NAME_SIZE); // PI20 UART7_TX
b->pins[32].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 1 };
b->pins[32].gpio.pinmap = 276;
strncpy(b->pins[33].name, "PB13", MRAA_PIN_NAME_SIZE); // PB13 SPDIF_D0
b->pins[33].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[33].gpio.pinmap = 45;
strncpy(b->pins[34].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[34].capabilities = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[35].name, "PB07", MRAA_PIN_NAME_SIZE); // PB07 I2S0_LRCK
b->pins[35].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[35].gpio.pinmap = 39;
strncpy(b->pins[36].name, "PB06", MRAA_PIN_NAME_SIZE); // PB06 I2S0BCLK
b->pins[36].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[36].gpio.pinmap = 38;
strncpy(b->pins[37].name, "PB05", MRAA_PIN_NAME_SIZE); // PB05 I2S0MCK
b->pins[37].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[37].gpio.pinmap = 37;
strncpy(b->pins[38].name, "PB12", MRAA_PIN_NAME_SIZE); // PB12 I2S0_DI
b->pins[38].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[38].gpio.pinmap = 44;
strncpy(b->pins[39].name, "GND", MRAA_PIN_NAME_SIZE);
b->pins[39].capabilities = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 0, 0, 0 };
strncpy(b->pins[40].name, "PB08", MRAA_PIN_NAME_SIZE); // PB08 I2S0_DO0
b->pins[40].capabilities = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
b->pins[40].gpio.pinmap = 40;
}
b->aio_count = 0;
b->adc_raw = 0;
b->adc_supported = 0;
b->pwm_default_period = 500;
b->pwm_max_period = 2147483;
b->pwm_min_period = 1;
b->gpio_count = 0;
int i;
for (i = 0; i < b->phy_pin_count; i++) {
if (b->pins[i].capabilities.gpio) {
b->gpio_count++;
}
}
// BUS DEFINITIONS
b->i2c_bus_count = 0;
b->def_i2c_bus = 0;
if (i2c2 >= 0) {
b->i2c_bus[b->i2c_bus_count].bus_id = i2c2;
b->i2c_bus[b->i2c_bus_count].sda = 3;
b->i2c_bus[b->i2c_bus_count].scl = 5;
b->i2c_bus_count++;
}
b->spi_bus_count = 0;
b->def_spi_bus = 0;
if (spi0 >= 0) {
b->spi_bus[b->spi_bus_count].bus_id = spi0;
b->spi_bus[b->spi_bus_count].slave_s = 0;
b->spi_bus[b->spi_bus_count].cs = 24;
b->spi_bus[b->spi_bus_count].mosi = 19;
b->spi_bus[b->spi_bus_count].miso = 21;
b->spi_bus[b->spi_bus_count].sclk = 23;
b->spi_bus_count++;
}
b->uart_dev_count = 0;
b->def_uart_dev = 0;
if ((uart3 >= 0) && (platform_detected == PLATFORM_BANANA_PI)) {
b->def_uart_dev = b->uart_dev_count;
b->uart_dev[b->uart_dev_count].device_path = serialdev[uart3];
b->uart_dev[b->uart_dev_count].rx = 11;
b->uart_dev[b->uart_dev_count].tx = 13;
b->uart_dev_count++;
}
if ((uart4 >= 0) && (platform_detected == PLATFORM_BANANA_PRO)) {
b->def_uart_dev = b->uart_dev_count;
b->uart_dev[b->uart_dev_count].device_path = serialdev[uart4];
b->uart_dev[b->uart_dev_count].rx = 10;
b->uart_dev[b->uart_dev_count].tx = 8;
b->uart_dev_count++;
}
if (uart7 >= 0) {
b->uart_dev[b->uart_dev_count].device_path = serialdev[uart7];
if (platform_detected == PLATFORM_BANANA_PRO) {
b->uart_dev[b->uart_dev_count].rx = 31;
b->uart_dev[b->uart_dev_count].tx = 32;
} else {
b->uart_dev[b->uart_dev_count].rx = 30;
b->uart_dev[b->uart_dev_count].tx = 32;
}
b->uart_dev_count++;
}
if (uart2 >= 0) {
b->uart_dev[b->uart_dev_count].device_path = serialdev[uart2];
b->uart_dev[b->uart_dev_count].rx = 11;
b->uart_dev[b->uart_dev_count].tx = 13;
b->uart_dev_count++;
}
return b;
}
