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Trying to rx/tx.

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This commit is contained in:
Marvin Blum
2017-04-16 15:15:14 +02:00
parent f5769d48c9
commit cad7631894
3 changed files with 115 additions and 47 deletions
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98
rf24/rf24.c
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@@ -5,14 +5,13 @@
// FIXME for testing, remove later
#include <util/delay.h>
const unsigned char RF24_POWER_DOWN = 1;
const unsigned char RF24_STANDBY_1 = 2;
const unsigned char RF24_STANDBY_2 = 3;
const unsigned char RF24_TX = 4;
const unsigned char RF24_RX = 5;
#define CONFIG_CRC (1<<EN_CRC)|(1<<CRCO)
unsigned char _ce, _csn, _sck, _mo, _mi, _irq, _payload_len;
void rf24_rx();
void rf24_tx();
unsigned char rf24_fifo_empty();
void rf24_serial_transmit(unsigned char*, unsigned char);
unsigned char rf24_serial_write(unsigned char);
@@ -32,8 +31,6 @@ void rf24_init(unsigned char ce, unsigned char csn, unsigned char sck, unsigned
_mo = mo;
_mi = mi;
_irq = irq;
//rf24_mode(RF24_POWER_DOWN);
}
// channel in 1Mhz steps
@@ -53,7 +50,7 @@ void rf24_config(unsigned char channel, unsigned char payload_len){
rf24_config_register(RF_SETUP, (1<<RF_DR_LOW)|(0x03<<RF_PWR));
// CRC
rf24_config_register(CONFIG, (1<<EN_CRC)|(1<<CRCO));
rf24_config_register(CONFIG, CONFIG_CRC);
// auto ACK for pipe 0 and 1
//rf24_config_register(EN_AA, 0x03);
@@ -63,6 +60,8 @@ void rf24_config(unsigned char channel, unsigned char payload_len){
// auto retransmit, 1000us, 15 retransmits
rf24_config_register(SETUP_RETR, (0x03<<ARD)|(0x0F<<ARC));
rf24_rx();
}
void rf24_rx_addr(unsigned char* addr){
@@ -77,30 +76,47 @@ void rf24_tx_addr(unsigned char* addr){
rf24_serial_transmit(addr, 5);
}
/*void rf24_mode(unsigned char mode){
switch(mode){
case 1: // RF24_POWER_DOWN
digital_write(_ce, LOW);
rf24_config_register(CONFIG, 0x00);
break;
case 2: // RF24_STANDBY_1
digital_write(_ce, LOW);
rf24_config_register(CONFIG, 1<<PWR_UP);
break;
case 3: // RF24_STANDBY_2
digital_write(_ce, HIGH);
rf24_config_register(CONFIG, 1<<PWR_UP);
break;
case 4: // RF24_TX
digital_write(_ce, HIGH);
rf24_config_register(CONFIG, 1<<PWR_UP);
break;
case 5: // RF24_RX
digital_write(_ce, HIGH);
rf24_config_register(CONFIG, (1<<PWR_UP)|(1<<PRIM_RX));
break;
void rf24_send(unsigned char* data){
rf24_tx();
rf24_serial_write(W_TX_PAYLOAD);
rf24_serial_transmit(data, _payload_len);
digital_write(_ce, HIGH);
}
unsigned char rf24_is_sending(){
unsigned char status = rf24_status();
if(status&((1<<TX_DS)|(1<<MAX_RT))){
return 0;
}
}*/
return 1;
}
unsigned char rf24_data_ready(){
unsigned char status = rf24_status();
if(status&(1<<RX_DR)){
return 1;
}
return !rf24_fifo_empty();
}
void rf24_get_data(unsigned char* data){
rf24_serial_write(R_RX_PAYLOAD);
unsigned char i = 0;
for(i = 0; i < 4; i++){
data[3-i] = rf24_serial_write(NOP);
}
rf24_config_register(STATUS, 1<<RX_DR);
}
unsigned char rf24_status(){
return rf24_serial_write(NOP); // returns STATUS register
}
void rf24_config_register(unsigned char reg, unsigned char value){
rf24_serial_write(W_REGISTER|(reg&REG_MASK));
@@ -111,6 +127,24 @@ unsigned char rf24_read_register(unsigned char reg){
return rf24_serial_write(R_REGISTER|(reg&REG_MASK));
}
void rf24_rx(){
digital_write(_ce, HIGH);
rf24_config_register(CONFIG, CONFIG_CRC|(1<<PWR_UP)|(1<<PRIM_RX));
rf24_config_register(STATUS, (1<<RX_DR)|(1<<TX_DS)|(1<<MAX_RT));
}
void rf24_tx(){
digital_write(_ce, LOW);
rf24_config_register(CONFIG, CONFIG_CRC|(1<<PWR_UP)|(0<<PRIM_RX));
rf24_config_register(STATUS, (1<<RX_DR)|(1<<TX_DS)|(1<<MAX_RT));
rf24_serial_write(FLUSH_TX);
}
unsigned char rf24_fifo_empty(){
unsigned char fifo = rf24_read_register(FIFO_STATUS);
return fifo&(1<<RX_EMPTY);
}
void rf24_serial_transmit(unsigned char* data, unsigned char len){
unsigned char i = 0;
@@ -125,8 +159,6 @@ unsigned char rf24_serial_write(unsigned char data){
unsigned char i = 0, rx = 0;
for(i = 0; i < 8; i++){
_delay_ms(5);
// write bit
if(data&(1<<(7-i))){
digital_write(_mo, HIGH);