int main(void)
{
uint8_t buf[NRF24L01P_PAYLOAD_WIDTH];
uint32_t counter = 0;
#if 0
uint8_t x;
#endif
/* setup spi first */
spi_setup_master();
spi_set_sck_freq(SPI_SCK_FREQ_FOSC2);
uart_setup();
nrf24l01p_setup();
/* sparkfun usb serial board configuration */
/* NOTE: nrf24l01p_enable_crc8(); for nrf24l01p board */
/* nrf24l01p_enable_crc16(); */
nrf24l01p_disable_crc();
/* auto ack disabled */
/* auto retransmit disabled */
/* 4 bytes payload */
/* 1mbps, 0dbm */
/* nrf24l01p_set_rate(NRF24L01P_RATE_1MBPS); */
nrf24l01p_set_rate(NRF24L01P_RATE_2MBPS);
/* nrf24l01p_set_rate(NRF24L01P_RATE_250KBPS); */
/* channel 2 */
nrf24l01p_set_chan(2);
/* 5 bytes addr width */
/* nrf24l01p_set_addr_width(NRF24L01P_ADDR_WIDTH_5); */
nrf24l01p_set_addr_width(NRF24L01P_ADDR_WIDTH_3);
/* rx address */
nrf24l01p_cmd_buf[0] = 0xe7;
nrf24l01p_cmd_buf[1] = 0xe7;
nrf24l01p_cmd_buf[2] = 0xe7;
nrf24l01p_cmd_buf[3] = 0xe7;
nrf24l01p_cmd_buf[4] = 0xe7;
nrf24l01p_write_reg40(NRF24L01P_REG_RX_ADDR_P0);
/* tx address */
nrf24l01p_cmd_buf[0] = 0xe7;
nrf24l01p_cmd_buf[1] = 0xe7;
nrf24l01p_cmd_buf[2] = 0xe7;
nrf24l01p_cmd_buf[3] = 0xe7;
nrf24l01p_cmd_buf[4] = 0xe7;
nrf24l01p_write_reg40(NRF24L01P_REG_TX_ADDR);
/* enable tx no ack command */
nrf24l01p_enable_tx_noack();
nrf24l01p_powerdown_to_standby();
nrf24l01p_standby_to_tx();
if (nrf24l01p_is_tx_empty() == 0) nrf24l01p_flush_tx();
#if 0
uart_write((uint8_t*)"tx side\r\n", 9);
uart_write((uint8_t*)"press space\r\n", 13);
uart_read_uint8(&x);
uart_write((uint8_t*)"starting\r\n", 10);
#endif
/* enable interrupts */
sei();
while (1)
{
if ((++counter) != (200000UL / 8UL)) continue ;
counter = 0;
make_pattern(buf);
nrf24l01p_write_tx_noack_zero(buf);
nrf24l01p_complete_tx_noack_zero();
while (nrf24l01p_is_tx_irq() == 0) ;
}
return 0;
}
int main(void)
{
uint8_t tx_addr[4] = { 0xaa, 0xab, 0xac, 0xad };
uint8_t rx_addr[4] = { 0xa1, 0xa2, 0xa3, 0xa4 };
sys_setup();
uart_setup();
/* setup spi first */
spi_setup_master();
spi_set_sck_freq(SPI_SCK_FREQ_FOSC2);
nrf905_setup();
nrf905_set_tx_addr(tx_addr, 4);
nrf905_set_rx_addr(rx_addr, 4);
nrf905_set_payload_width(2);
nrf905_commit_config();
#if 0
{
uint8_t i;
dump_config();
for (i = 0; i != sizeof(nrf905_config); ++i)
nrf905_config[i] = 0x2a;
nrf905_cmd_rc();
dump_config();
}
#endif
#if 0
{
uint8_t x;
uart_write((uint8_t*)"rx side\r\n", 9);
uart_write((uint8_t*)"press space\r\n", 13);
uart_read_uint8(&x);
uart_write((uint8_t*)"starting\r\n", 10);
}
#endif
led_setup();
nrf905_set_rx();
while (1)
{
wait_cd:
if (nrf905_is_cd() == 0)
{
led_set(LED_RED);
while (nrf905_is_cd() == 0) ;
/* uart_write((uint8_t*)"cd\r\n", 4); */
}
#if 0
while (nrf905_is_am() == 0) ;
uart_write((uint8_t*)"am\r\n", 4);
led_mask = LED_GREEN;
#endif
led_set(LED_GREEN);
wait_dr:
while (nrf905_is_dr() == 0)
{
if (nrf905_is_cd() == 0) goto wait_cd;
}
uart_write((uint8_t*)"dr\r\n", 4);
reset_pattern();
/* wait(); */
nrf905_read_payload();
if (check_pattern() == 0)
{
uart_write((uint8_t*)"ok\r\n", 4);
led_set(LED_BLUE);
}
else led_set(LED_GREEN);
goto wait_dr;
}
return 0;
}
void ledmatrix_setup(void) {
// Setup SPI - we divide the clock by 128.
// (This speed guarantees the SPI buffer will never overflow.)
spi_setup_master(128);
}
int main(void)
{
uint16_t counter;
uint8_t x;
#define CONFIG_CHECK 0
#if CONFIG_CHECK
uint16_t error;
#endif
/* setup spi first */
spi_setup_master();
spi_set_sck_freq(SPI_SCK_FREQ_FOSC2);
uart_setup();
/* setup timer1, normal mode, interrupt on match 0xffff */
OCR1A = 0xffff;
TCCR1A = 0;
TCCR1B = 0;
TCCR1C = 0;
TIMSK1 = 1 << 1;
/* enable interrupts */
sei();
nrf24l01p_setup();
/* sparkfun usb serial board configuration */
/* NOTE: nrf24l01p_enable_crc8(); for nrf24l01p board */
/* nrf24l01p_enable_crc16(); */
nrf24l01p_disable_crc();
/* auto ack disabled */
/* auto retransmit disabled */
/* 4 bytes payload */
/* 1mbps, 0dbm */
/* nrf24l01p_set_rate(NRF24L01P_RATE_1MBPS); */
nrf24l01p_set_rate(NRF24L01P_RATE_2MBPS);
/* nrf24l01p_set_rate(NRF24L01P_RATE_250KBPS); */
/* channel 2 */
nrf24l01p_set_chan(2);
/* 5 bytes addr width */
/* nrf24l01p_set_addr_width(NRF24L01P_ADDR_WIDTH_5); */
nrf24l01p_set_addr_width(NRF24L01P_ADDR_WIDTH_3);
/* rx address */
nrf24l01p_cmd_buf[0] = 0xe7;
nrf24l01p_cmd_buf[1] = 0xe7;
nrf24l01p_cmd_buf[2] = 0xe7;
nrf24l01p_cmd_buf[3] = 0xe7;
nrf24l01p_cmd_buf[4] = 0xe7;
nrf24l01p_write_reg40(NRF24L01P_REG_RX_ADDR_P0);
/* tx address */
nrf24l01p_cmd_buf[0] = 0xe7;
nrf24l01p_cmd_buf[1] = 0xe7;
nrf24l01p_cmd_buf[2] = 0xe7;
nrf24l01p_cmd_buf[3] = 0xe7;
nrf24l01p_cmd_buf[4] = 0xe7;
nrf24l01p_write_reg40(NRF24L01P_REG_TX_ADDR);
/* enable tx no ack command */
nrf24l01p_enable_tx_noack();
nrf24l01p_powerdown_to_standby();
uart_write((uint8_t*)"rx side\r\n", 9);
redo_receive:
#if CONFIG_CHECK
error = 0;
#endif
counter = 0;
is_timer1_irq = 0;
uart_write((uint8_t*)"press space\r\n", 13);
uart_read_uint8(&x);
uart_write((uint8_t*)"starting\r\n", 10);
nrf24l01p_standby_to_rx();
/* wait for the starting packet */
if (nrf24l01p_is_rx_full()) nrf24l01p_flush_rx();
while (nrf24l01p_is_rx_irq() == 0) ;
nrf24l01p_read_rx();
/* clock source disabled, safe to access 16 bits counter */
TCNT1 = 0;
/* prescaler set to 256 */
/* interrupt every 16000000 / (65535 * 256) = 0.954 s */
TCCR1B = 1 << 2;
while (1)
{
if (is_timer1_irq == 1)
{
break ;
}
else if (nrf24l01p_is_rx_irq())
{
#if CONFIG_CHECK
uint8_t i;
for (i = 0; i < NRF24L01P_PAYLOAD_WIDTH; ++i)
nrf24l01p_cmd_buf[i] = 0x00;
#endif
nrf24l01p_read_rx();
#if CONFIG_CHECK
for (i = 0; i < NRF24L01P_PAYLOAD_WIDTH; ++i)
{
if (nrf24l01p_cmd_buf[i] != (0x2a + i))
{
++error;
break ;
}
}
#endif
++counter;
}
}
/* print counter */
uart_write((uint8_t*)"counter: ", 9);
uart_write((uint8_t*)uint16_to_string(counter), 4);
uart_write((uint8_t*)"\r\n", 2);
#if CONFIG_CHECK
/* print error */
uart_write((uint8_t*)"error: ", 7);
uart_write((uint8_t*)uint16_to_string(error), 4);
uart_write((uint8_t*)"\r\n", 2);
#endif
/* still in rx mode */
nrf24l01p_set_standby();
goto redo_receive;
return 0;
}
int main(void)
{
uint16_t counter;
uint8_t x;
/* setup spi first */
spi_setup_master();
spi_set_sck_freq(SPI_SCK_FREQ_FOSC2);
uart_setup();
/* setup timer1, normal mode, interrupt on match 0x8000 */
OCR1A = 0x8000;
TCCR1A = 0;
TCCR1B = 0;
TCCR1C = 0;
TIMSK1 = 1 << 1;
/* enable interrupts */
sei();
nrf24l01p_setup();
/* sparkfun usb serial board configuration */
/* NOTE: nrf24l01p_enable_crc8(); for nrf24l01p board */
/* nrf24l01p_enable_crc16(); */
nrf24l01p_disable_crc();
/* auto ack disabled */
/* auto retransmit disabled */
/* 4 bytes payload */
/* 1mbps, 0dbm */
/* nrf24l01p_set_rate(NRF24L01P_RATE_1MBPS); */
nrf24l01p_set_rate(NRF24L01P_RATE_2MBPS);
/* nrf24l01p_set_rate(NRF24L01P_RATE_250KBPS); */
/* channel 2 */
nrf24l01p_set_chan(2);
/* 5 bytes addr width */
/* nrf24l01p_set_addr_width(NRF24L01P_ADDR_WIDTH_5); */
nrf24l01p_set_addr_width(NRF24L01P_ADDR_WIDTH_3);
/* rx address */
nrf24l01p_cmd_buf[0] = 0xe7;
nrf24l01p_cmd_buf[1] = 0xe7;
nrf24l01p_cmd_buf[2] = 0xe7;
nrf24l01p_cmd_buf[3] = 0xe7;
nrf24l01p_cmd_buf[4] = 0xe7;
nrf24l01p_write_reg40(NRF24L01P_REG_RX_ADDR_P0);
/* tx address */
nrf24l01p_cmd_buf[0] = 0xe7;
nrf24l01p_cmd_buf[1] = 0xe7;
nrf24l01p_cmd_buf[2] = 0xe7;
nrf24l01p_cmd_buf[3] = 0xe7;
nrf24l01p_cmd_buf[4] = 0xe7;
nrf24l01p_write_reg40(NRF24L01P_REG_TX_ADDR);
/* enable tx no ack command */
nrf24l01p_enable_tx_noack();
nrf24l01p_powerdown_to_standby();
uart_write((uint8_t*)"tx side\r\n", 9);
redo_transmit:
counter = 0;
is_timer1_irq = 0;
uart_write((uint8_t*)"press space\r\n", 13);
uart_read_uint8(&x);
uart_write((uint8_t*)"starting\r\n", 10);
nrf24l01p_standby_to_tx();
if (nrf24l01p_is_tx_empty() == 0) nrf24l01p_flush_tx();
/* clock source disabled, safe to access 16 bits counter */
TCNT1 = 0;
/* prescaler set to 1024 */
/* interrupt every 2.01s (match on 0x8000) */
TCCR1B = 5 << 0;
while (1)
{
#define CONFIG_CHECK 0
#if CONFIG_CHECK
uint8_t i;
for (i = 0; i < NRF24L01P_PAYLOAD_WIDTH; ++i)
nrf24l01p_cmd_buf[i] = 0x2a + i;
#endif
nrf24l01p_write_tx_noack();
while (nrf24l01p_is_tx_irq() == 0) ;
++counter;
if (is_timer1_irq == 1) break ;
}
/* print counter */
uart_write((uint8_t*)"counter: ", 9);
uart_write((uint8_t*)uint16_to_string(counter), 4);
uart_write((uint8_t*)"\r\n", 2);
goto redo_transmit;
return 0;
}