diff options
Diffstat (limited to 'rf_test')
| -rw-r--r-- | rf_test/radio.c | 55 |
1 files changed, 31 insertions, 24 deletions
diff --git a/rf_test/radio.c b/rf_test/radio.c index 00d5ea4..802144a 100644 --- a/rf_test/radio.c +++ b/rf_test/radio.c @@ -13,7 +13,14 @@ #define SPI_DDR DDRB #define SPI_PORT PORTB -enum OpMode { DEFAULT, STDBY, TX, RX }; +#define RFM69_OPMODE_RX 0x10 +#define RFM69_OPMODE_TX 0x0C +#define RFM69_OPMODE_STDBY 0x04 + +#define RF69_REG_OPMODE 0x01 +#define RF69_REG_IRQFLAGS1 0x27 +#define RF69_REG_TESTPA1 0x5A +#define RF69_REG_TESTPA2 0x5C static power = 0; @@ -44,22 +51,28 @@ static inline void write_reg(uint8_t reg, uint8_t val) static inline void set_mode(uint8_t mode) { - static uint8_t prev_mode = DEFAULT; + static uint8_t prev_mode; uint8_t opmode; if (prev_mode != mode) { - if (mode != STDBY) { + if (mode == RFM69_OPMODE_TX) { + if (power >= 18) { + write_reg(RF69_REG_TESTPA1, 0x5D); + write_reg(RF69_REG_TESTPA2, 0x7C); + } + } else { if (power >= 18) { - write_reg(0x5A, 0x55); - write_reg(0x5C, 0x70); + write_reg(RF69_REG_TESTPA1, 0x55); + write_reg(RF69_REG_TESTPA2, 0x70); } - } + } - opmode = read_reg(0x01); + opmode = read_reg(RF69_REG_OPMODE); opmode &= ~0x1C; opmode |= (mode & 0x1C); - write_reg(0x01, opmode); - while (!(read_reg(0x27) & 0x80)) + + write_reg(RF69_REG_OPMODE, opmode); + while (!(read_reg(RF69_REG_IRQFLAGS1) & 0x80)) ; prev_mode = mode; @@ -136,23 +149,13 @@ void radio_init(const struct radio_cfg *cfg) SPI_PORT |= (1 << SPI_SS); SPCR |= (1 << SPE) | (1 << MSTR); - set_mode(STDBY); + set_mode(RFM69_OPMODE_STDBY); - // modem config: - // GFSK (BT=1.0), no Manchester, whitening, CRC, no address filtering - // AFC BW == RX BW == 2 x bit rate - write_reg(0x02, 0x01); - write_reg(0x03, 0x00); - write_reg(0x04, 0x80); - write_reg(0x05, 0x10); - write_reg(0x06, 0x00); - write_reg(0x19, 0xE0); - write_reg(0x1A, 0xE0); + // LNA, AFC and RXBW settings + write_reg(0x18, 0x88); + write_reg(0x19, 0x55); + write_reg(0x1A, 0x8B); - write_reg(0x37, 0x50); - write_reg(0x38, cfg->payload_len); - write_reg(0x39, cfg->nodeid); - // DIO mappings: IRQ on DIO0 write_reg(0x25, 0x40); write_reg(0x26, 0x07); @@ -164,6 +167,10 @@ void radio_init(const struct radio_cfg *cfg) write_reg(0x2E, 0x80); write_reg(0x2F, cfg->netid); + // packet config + write_reg(0x37, 0x10); + write_reg(0x38, cfg->payload_len); + write_reg(0x39, cfg->nodeid); // fifo config write_reg(0x3C, 0x8F); |