static void esky_init(u8 bind)
{
NRF24L01_Initialize();
// 2-bytes CRC, radio off
NRF24L01_WriteReg(NRF24L01_00_CONFIG, BV(NRF24L01_00_EN_CRC) | BV(NRF24L01_00_CRCO));
NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x00); // No Auto Acknoledgement
NRF24L01_WriteReg(NRF24L01_02_EN_RXADDR, 0x01); // Enable data pipe 0
if (bind) {
set_bind_address();
} else {
set_data_address();
}
NRF24L01_WriteReg(NRF24L01_04_SETUP_RETR, 0); // No auto retransmission
NRF24L01_WriteReg(NRF24L01_05_RF_CH, 50); // Channel 50 for bind packets
NRF24L01_SetBitrate(0); // 1Mbps
NRF24L01_SetPower(Model.tx_power);
NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70); // Clear data ready, data sent, and retransmit
// NRF24L01_WriteReg(NRF24L01_08_OBSERVE_TX, 0x00); // no write bits in this field
// NRF24L01_WriteReg(NRF24L01_00_CD, 0x00); // same
// NRF24L01_WriteReg(NRF24L01_0C_RX_ADDR_P2, 0xC3); // LSB byte of pipe 2 receive address
// NRF24L01_WriteReg(NRF24L01_0D_RX_ADDR_P3, 0xC4);
// NRF24L01_WriteReg(NRF24L01_0E_RX_ADDR_P4, 0xC5);
// NRF24L01_WriteReg(NRF24L01_0F_RX_ADDR_P5, 0xC6);
NRF24L01_WriteReg(NRF24L01_11_RX_PW_P0, PAYLOADSIZE); // bytes of data payload for pipe 0
NRF24L01_WriteReg(NRF24L01_12_RX_PW_P1, PAYLOADSIZE);
NRF24L01_WriteReg(NRF24L01_13_RX_PW_P2, PAYLOADSIZE);
NRF24L01_WriteReg(NRF24L01_14_RX_PW_P3, PAYLOADSIZE);
NRF24L01_WriteReg(NRF24L01_15_RX_PW_P4, PAYLOADSIZE);
NRF24L01_WriteReg(NRF24L01_16_RX_PW_P5, PAYLOADSIZE);
NRF24L01_WriteReg(NRF24L01_17_FIFO_STATUS, 0x00); // Just in case, no real bits to write here
}
static void esky_init(u8 bind)
{
NRF24L01_Initialize();
// 2-bytes CRC, radio off
NRF24L01_WriteReg(NRF24L01_00_CONFIG, BV(NRF24L01_00_EN_CRC) | BV(NRF24L01_00_CRCO));
NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x00); // No Auto Acknoledgement
NRF24L01_WriteReg(NRF24L01_02_EN_RXADDR, 0x01); // Enable data pipe 0
if (bind) {
set_bind_address();
} else {
set_data_address();
}
NRF24L01_WriteReg(NRF24L01_04_SETUP_RETR, 0); // No auto retransmission
NRF24L01_WriteReg(NRF24L01_05_RF_CH, 50); // Channel 50 for bind packets
NRF24L01_SetBitrate(0); // 1Mbps
NRF24L01_SetPower(Model.tx_power);
NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70); // Clear data ready, data sent, and retransmit
// NRF24L01_WriteReg(NRF24L01_08_OBSERVE_TX, 0x00); // no write bits in this field
// NRF24L01_WriteReg(NRF24L01_00_CD, 0x00); // same
// NRF24L01_WriteReg(NRF24L01_0C_RX_ADDR_P2, 0xC3); // LSB byte of pipe 2 receive address
// NRF24L01_WriteReg(NRF24L01_0D_RX_ADDR_P3, 0xC4);
// NRF24L01_WriteReg(NRF24L01_0E_RX_ADDR_P4, 0xC5);
// NRF24L01_WriteReg(NRF24L01_0F_RX_ADDR_P5, 0xC6);
NRF24L01_WriteReg(NRF24L01_11_RX_PW_P0, PAYLOADSIZE); // bytes of data payload for pipe 0
NRF24L01_WriteReg(NRF24L01_12_RX_PW_P1, PAYLOADSIZE);
NRF24L01_WriteReg(NRF24L01_13_RX_PW_P2, PAYLOADSIZE);
NRF24L01_WriteReg(NRF24L01_14_RX_PW_P3, PAYLOADSIZE);
NRF24L01_WriteReg(NRF24L01_15_RX_PW_P4, PAYLOADSIZE);
NRF24L01_WriteReg(NRF24L01_16_RX_PW_P5, PAYLOADSIZE);
NRF24L01_WriteReg(NRF24L01_17_FIFO_STATUS, 0x00); // Just in case, no real bits to write here
// Check for Beken BK2421/BK2423 chip
// It is done by using Beken specific activate code, 0x53
// and checking that status register changed appropriately
// There is no harm to run it on nRF24L01 because following
// closing activate command changes state back even if it
// does something on nRF24L01
NRF24L01_Activate(0x53); // magic for BK2421 bank switch
printf("Trying to switch banks\n");
if (NRF24L01_ReadReg(NRF24L01_07_STATUS) & 0x80) {
printf("BK2421 detected\n");
// Beken registers don't have such nice names, so we just mention
// them by their numbers
// It's all magic, eavesdropped from real transfer and not even from the
// data sheet - it has slightly different values
NRF24L01_WriteRegisterMulti(0x00, (u8 *) "\x40\x4B\x01\xE2", 4);
NRF24L01_WriteRegisterMulti(0x01, (u8 *) "\xC0\x4B\x00\x00", 4);
NRF24L01_WriteRegisterMulti(0x02, (u8 *) "\xD0\xFC\x8C\x02", 4);
NRF24L01_WriteRegisterMulti(0x03, (u8 *) "\xF9\x00\x39\x21", 4);
NRF24L01_WriteRegisterMulti(0x04, (u8 *) "\xC1\x96\x9A\x1B", 4);
NRF24L01_WriteRegisterMulti(0x05, (u8 *) "\x24\x06\x7F\xA6", 4);
NRF24L01_WriteRegisterMulti(0x0C, (u8 *) "\x00\x12\x73\x00", 4);
NRF24L01_WriteRegisterMulti(0x0D, (u8 *) "\x46\xB4\x80\x00", 4);
NRF24L01_WriteRegisterMulti(0x0E, (u8 *) "\x41\x10\x04\x82\x20\x08\x08\xF2\x7D\xEF\xFF", 11);
NRF24L01_WriteRegisterMulti(0x04, (u8 *) "\xC7\x96\x9A\x1B", 4);
NRF24L01_WriteRegisterMulti(0x04, (u8 *) "\xC1\x96\x9A\x1B", 4);
} else {
printf("nRF24L01 detected\n");
}
NRF24L01_Activate(0x53); // switch bank back
// Implicit delay in callback
// delay(50);
}
