diff options
Diffstat (limited to 'rf_test')
| -rw-r--r-- | rf_test/radio.c | 158 | ||||
| -rw-r--r-- | rf_test/radio.h | 4 | ||||
| -rw-r--r-- | rf_test/send.c | 2 |
3 files changed, 17 insertions, 147 deletions
diff --git a/rf_test/radio.c b/rf_test/radio.c index c967fe0..3373354 100644 --- a/rf_test/radio.c +++ b/rf_test/radio.c @@ -1,29 +1,3 @@ -// ********************************************************************************** -// Driver definition for HopeRF RFM69W/RFM69HW/RFM69CW/RFM69HCW, Semtech SX1231/1231H -// ********************************************************************************** -// Copyright LowPowerLab LLC 2018, https://www.LowPowerLab.com/contact -// ********************************************************************************** -// License -// ********************************************************************************** -// This program is free software; you can redistribute it -// and/or modify it under the terms of the GNU General -// Public License as published by the Free Software -// Foundation; either version 3 of the License, or -// (at your option) any later version. -// -// This program is distributed in the hope that it will -// be useful, but WITHOUT ANY WARRANTY; without even the -// implied warranty of MERCHANTABILITY or FITNESS FOR A -// PARTICULAR PURPOSE. See the GNU General Public -// License for more details. -// -// Licence can be viewed at -// http://www.gnu.org/licenses/gpl-3.0.txt -// -// Please maintain this license information along with authorship -// and copyright notices in any redistribution of this code -// ********************************************************************************** - #include <stdlib.h> #include <avr/io.h> @@ -39,12 +13,6 @@ #define SPI_DDR DDRB #define SPI_PORT PORTB -#define MAX_PAYLOAD_LEN 61 -#define MAX_POWER_LEVEL 23 - -static uint8_t node_id = 0; -static uint8_t payload_len = 0; - static inline uint8_t read_reg(uint8_t reg) { SPI_PORT &= ~(1 << SPI_SS); @@ -71,41 +39,10 @@ static inline void write_reg(uint8_t reg, uint8_t val) SPI_PORT |= (1 << SPI_SS); } -static inline uint8_t rssi(void) -{ - return (-1 * (read_reg(0x24) >> 1)); -} - -static inline void set_power_level(uint8_t pwl) -{ - uint8_t pa_mask; - - if (pwl < 16) { - pwl += 16; - pa_mask = 0x40; - } else { - pwl += pwl < 20 ? 10 : 8; - pa_mask = 0x40 | 0x20; - } - - write_reg(0x5A, 0x5D); - write_reg(0x5C, 0x7C); - write_reg(0x11, (pa_mask | pwl)); -} - -void radio_sendto(uint8_t addr, const char *data, uint8_t n) +void radio_send(const char *data, uint8_t n) { uint8_t i; - if (n > MAX_PAYLOAD_LEN) - n = MAX_PAYLOAD_LEN; - - // force-stop rx - write_reg(0x3D, ((read_reg(0x3D) & 0xFB) | 0x04)); - while (((read_reg(0x01) & 0x1C) == 0x10) && payload_len == 0 && rssi() < -90) - // todo: read data in fifo - ; - write_reg(0x01, 0x04); while (!(read_reg(0x27) & 80)) ; @@ -114,19 +51,6 @@ void radio_sendto(uint8_t addr, const char *data, uint8_t n) SPDR = 0x00 | 0x80; while (!(SPSR & (1 << SPIF))) ; - SPDR = n + 3; - while (!(SPSR & (1 << SPIF))) - ; - SPDR = addr; - while (!(SPSR & (1 << SPIF))) - ; - SPDR = node_id; - while (!(SPSR & (1 << SPIF))) - ; - // ctl byte - SPDR = 0; - while (!(SPSR & (1 << SPIF))) - ; for (i = 0; i < n; i++) { SPDR = data[i]; while (!(SPSR & (1 << SPIF))) @@ -134,18 +58,7 @@ void radio_sendto(uint8_t addr, const char *data, uint8_t n) } SPI_PORT |= (1 << SPI_SS); - write_reg(0x01, ((read_reg(0x01) & 0xE3) | 0x0C)); - write_reg(0x5A, 0x5D); - write_reg(0x5C, 0x7C); - - while (!(read_reg(0x28) & 0x08)) - ; - - serial_write_line("146"); - - write_reg(0x01, ((read_reg(0x01) & 0xE3) | 0x04)); - while (!(read_reg(0x27) & 0x80)) - ; + // todo: wait for tx complete } uint8_t radio_recv(char *buf, uint8_t n) @@ -175,69 +88,26 @@ uint8_t radio_recv(char *buf, uint8_t n) return read_len; } -void radio_init(struct radio_cfg *cfg) +void radio_init(const struct radio_cfg *cfg) { - node_id = cfg->node_id; - SPI_DDR |= (1 << SPI_SS) | (1 << SPI_SCK) | (1 << SPI_MOSI); SPI_PORT |= (1 << SPI_SS); SPCR |= (1 << SPE) | (1 << MSTR); - - // todo: do we need this? - do { - write_reg(0x2F, 0xAA); - } while (read_reg(0x2F) != 0xAA); - - do { - write_reg(0x2F, 0x55); - } while (read_reg(0x2F) != 0x55); - - write_reg(0x01, 0x04); - - write_reg(0x02, 0x00); - - write_reg(0x03, 0x02); - write_reg(0x04, 0x40); - write_reg(0x05, 0x03); - write_reg(0x06, 0x33); + // LNA, AFC and RXBW settings + write_reg(0x18, 0x88); + write_reg(0x19, 0x55); + write_reg(0x1A, 0x8B); - // carrier frequency: 433MHz - write_reg(0x07, 0x6C); - write_reg(0x08, 0x40); - write_reg(0x09, 0x00); - - write_reg(0x19, (0x40 | 0x00 | 0x02)); - - // DIO mapping + // DIO mappings: IRQ on DIO0 write_reg(0x25, 0x40); write_reg(0x26, 0x07); - - write_reg(0x28, 0x10); - - write_reg(0x29, 220); - - // sync value - write_reg(0x2E, (0x80 | 0x08)); - write_reg(0x2F, 0x2D); - write_reg(0x30, cfg->network_id); - - // packet format and FIFO thresholds - write_reg(0x37, (0x80 | 0x10)); - write_reg(0x38, 66); - write_reg(0x3C, (0x80 | 0x0F)); - write_reg(0x3D, 0x10); - write_reg(0x6F, 0x30); + // RSSI threshold + write_reg(0x29, 0xE4); - // disable encryption - write_reg(0x3D, ((read_reg(0x3D) & 0xFE) | 0x00)); - - // enable high power amps - write_reg(0x13, 0x0F); - set_power_level(MAX_POWER_LEVEL); - - write_reg(0x01, ((read_reg(0x01) & 0xE3) | 0x04)); - while (!(read_reg(0x27) & 0x80)) - ; + // sync config + write_reg(0x2E, 0x88); + write_reg(0x2F, 0x2D); + write_reg(0x30, cfg->network_id); } diff --git a/rf_test/radio.h b/rf_test/radio.h index aaa099f..f016659 100644 --- a/rf_test/radio.h +++ b/rf_test/radio.h @@ -9,9 +9,9 @@ struct radio_cfg { uint8_t payload_len; }; -void radio_init(struct radio_cfg *cfg); +void radio_init(const struct radio_cfg *cfg); -void radio_sendto(uint8_t addr, const char *data, uint8_t n); +void radio_send(const char *data, uint8_t n); uint8_t radio_recv(char *buf, uint8_t n); diff --git a/rf_test/send.c b/rf_test/send.c index c3831ba..4934534 100644 --- a/rf_test/send.c +++ b/rf_test/send.c @@ -32,7 +32,7 @@ int main(void) sei(); for (;;) { - radio_sendto(1, s, n); + radio_send(s, n); serial_write_line("sent data"); LED_PORT |= (1 << LED_PIN); |