int nrf24l01p_init(nrf24l01p_t *dev, spi_t spi, gpio_t ce, gpio_t cs, gpio_t irq)
{
int status;
static const char INITIAL_TX_ADDRESS[] = {0xe7, 0xe7, 0xe7, 0xe7, 0xe7,};
static const char INITIAL_RX_ADDRESS[] = {0xe7, 0xe7, 0xe7, 0xe7, 0xe7,};
dev->spi = spi;
dev->ce = ce;
dev->cs = cs;
dev->irq = irq;
dev->listener = KERNEL_PID_UNDEF;
/* Init CE pin */
gpio_init(dev->ce, GPIO_OUT);
/* Init CS pin */
spi_init_cs(dev->spi, dev->cs);
/* Init IRQ pin */
gpio_init_int(dev->irq, GPIO_IN_PU, GPIO_FALLING, nrf24l01p_rx_cb, dev);
/* Test the SPI connection */
if (spi_acquire(dev->spi, dev->cs, SPI_MODE, SPI_CLK) != SPI_OK) {
DEBUG("error: unable to acquire SPI bus with given params\n");
return -1;
}
spi_release(dev->spi);
xtimer_spin(DELAY_AFTER_FUNC_TICKS);
/* Flush TX FIFIO */
status = nrf24l01p_flush_tx_fifo(dev);
if (status < 0) {
return status;
}
/* Flush RX FIFIO */
status = nrf24l01p_flush_rx_fifo(dev);
if (status < 0) {
return status;
}
/* Setup adress width */
status = nrf24l01p_set_address_width(dev, NRF24L01P_AW_5BYTE);
if (status < 0) {
return status;
}
/* Setup payload width */
status = nrf24l01p_set_payload_width(dev, NRF24L01P_PIPE0, NRF24L01P_MAX_DATA_LENGTH);
if (status < 0) {
return status;
}
/* Set RF channel */
status = nrf24l01p_set_channel(dev, INITIAL_RF_CHANNEL);
if (status < 0) {
return status;
}
/* Set RF power */
status = nrf24l01p_set_power(dev, INITIAL_RX_POWER_0dB);
if (status < 0) {
return status;
}
/* Set RF datarate */
status = nrf24l01p_set_datarate(dev, NRF24L01P_DR_250KBS);
if (status < 0) {
return status;
}
/* Set TX Address */
status = nrf24l01p_set_tx_address(dev, INITIAL_TX_ADDRESS, INITIAL_ADDRESS_WIDTH);
if (status < 0) {
return status;
}
/* Set RX Adress */
status = nrf24l01p_set_rx_address(dev, NRF24L01P_PIPE0, INITIAL_RX_ADDRESS, INITIAL_ADDRESS_WIDTH);
if (status < 0) {
return status;
}
/* Reset auto ack for all pipes */
status = nrf24l01p_disable_all_auto_ack(dev);
if (status < 0) {
return status;
}
/* Setup Auto ACK and retransmission */
status = nrf24l01p_setup_auto_ack(dev, NRF24L01P_PIPE0, NRF24L01P_RETR_750US, 15);
if (status < 0) {
return status;
}
/* Setup CRC */
status = nrf24l01p_enable_crc(dev, NRF24L01P_CRC_2BYTE);
if (status < 0) {
return status;
}
/* Reset all interrupt flags */
status = nrf24l01p_reset_all_interrupts(dev);
if (status < 0) {
return status;
}
return nrf24l01p_on(dev);
}
int nrf24l01p_init(nrf24l01p_t *dev, spi_t spi, gpio_t ce, gpio_t cs, gpio_t irq)
{
int status;
char INITIAL_TX_ADDRESS[] = {0xe7, 0xe7, 0xe7, 0xe7, 0xe7,};
char INITIAL_RX_ADDRESS[] = {0xe7, 0xe7, 0xe7, 0xe7, 0xe7,};
dev->spi = spi;
dev->ce = ce;
dev->cs = cs;
dev->irq = irq;
dev->listener = KERNEL_PID_UNDEF;
/* Init CE pin */
gpio_init(dev->ce, GPIO_DIR_OUT, GPIO_NOPULL);
/* Init CS pin */
gpio_init(dev->cs, GPIO_DIR_OUT, GPIO_NOPULL);
gpio_set(dev->cs);
/* Init IRQ pin */
gpio_init_int(dev->irq, GPIO_PULLUP, GPIO_FALLING, nrf24l01p_rx_cb, dev);
/* Init SPI */
spi_poweron(dev->spi);
spi_acquire(dev->spi);
status = spi_init_master(dev->spi, SPI_CONF_FIRST_RISING, SPI_SPEED_400KHZ);
spi_release(dev->spi);
if (status < 0) {
return status;
}
xtimer_spin(DELAY_AFTER_FUNC_TICKS);
/* Flush TX FIFIO */
status = nrf24l01p_flush_tx_fifo(dev);
if (status < 0) {
return status;
}
/* Flush RX FIFIO */
status = nrf24l01p_flush_rx_fifo(dev);
if (status < 0) {
return status;
}
/* Setup adress width */
status = nrf24l01p_set_address_width(dev, NRF24L01P_AW_5BYTE);
if (status < 0) {
return status;
}
/* Setup payload width */
status = nrf24l01p_set_payload_width(dev, NRF24L01P_PIPE0, NRF24L01P_MAX_DATA_LENGTH);
if (status < 0) {
return status;
}
/* Set RF channel */
status = nrf24l01p_set_channel(dev, INITIAL_RF_CHANNEL);
if (status < 0) {
return status;
}
/* Set RF power */
status = nrf24l01p_set_power(dev, INITIAL_RX_POWER_0dB);
if (status < 0) {
return status;
}
/* Set RF datarate */
status = nrf24l01p_set_datarate(dev, NRF24L01P_DR_250KBS);
if (status < 0) {
return status;
}
/* Set TX Address */
status = nrf24l01p_set_tx_address(dev, INITIAL_TX_ADDRESS, INITIAL_ADDRESS_WIDTH);
if (status < 0) {
return status;
}
/* Set RX Adress */
status = nrf24l01p_set_rx_address(dev, NRF24L01P_PIPE0, INITIAL_RX_ADDRESS, INITIAL_ADDRESS_WIDTH);
if (status < 0) {
return status;
}
/* Reset auto ack for all pipes */
status = nrf24l01p_disable_all_auto_ack(dev);
if (status < 0) {
return status;
}
/* Setup Auto ACK and retransmission */
status = nrf24l01p_setup_auto_ack(dev, NRF24L01P_PIPE0, NRF24L01P_RETR_750US, 15);
if (status < 0) {
return status;
}
/* Setup CRC */
status = nrf24l01p_enable_crc(dev, NRF24L01P_CRC_2BYTE);
if (status < 0) {
return status;
}
/* Reset all interrupt flags */
status = nrf24l01p_reset_all_interrupts(dev);
if (status < 0) {
return status;
}
return nrf24l01p_on(dev);
}
