Akash Vibhute
Maniacbug's RF24 arduino library ported to mbed. Tested, it works for Nucleo F411
Dependents: RF24Network_Send RF24Network_Receive WeatherStation maple_chotobot_rf_motores ... more
Diff: RF24.cpp
- Revision:
- 2:3bdf0d9bb71f
- Parent:
- 1:00706a42491e
- Child:
- 3:e94be00fd19e
--- a/RF24.cpp Mon Jul 06 05:16:37 2015 +0000
+++ b/RF24.cpp Thu Nov 05 05:40:23 2015 +0000
@@ -6,47 +6,119 @@
version 2 as published by the Free Software Foundation.
*/
+#include "nRF24L01.h"
+#include "RF24_config.h"
#include "RF24.h"
/****************************************************************************/
-void RF24::csn(int mode)
+void RF24::csn(bool mode)
{
- // Minimum ideal spi bus speed is 2x data rate
- // If we assume 2Mbs data rate and 16Mhz clock, a
- // divider of 4 is the minimum we want.
- // CLK:BUS 8Mhz:2Mhz, 16Mhz:4Mhz, or 20Mhz:5Mhz
-//#ifdef ARDUINO
-// spi.setBitOrder(MSBFIRST);
-// spi.setDataMode(spi_MODE0);
-// spi.setClockDivider(spi_CLOCK_DIV4);
-//#endif
-// digitalWrite(csn_pin,mode);
csn_pin = mode;
+ wait_us(5);
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}
/****************************************************************************/
-void RF24::ce(int level)
+void RF24::ce(bool level)
{
- //digitalWrite(ce_pin,level);
ce_pin = level;
+
}
/****************************************************************************/
+ inline void RF24::beginTransaction() {
+ csn_pin=LOW;
+
+
+
+ }
+
+/****************************************************************************/
+
+ inline void RF24::endTransaction() {
+ csn_pin=HIGH;
+
+
+
+ }
+
+/****************************************************************************/
+
uint8_t RF24::read_register(uint8_t reg, uint8_t* buf, uint8_t len)
{
uint8_t status;
- csn(LOW);
+ beginTransaction();
status = spi.write( R_REGISTER | ( REGISTER_MASK & reg ) );
while ( len-- )
*buf++ = spi.write(0xff);
+ endTransaction();
- csn(HIGH);
-
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return status;
}
@@ -54,11 +126,29 @@
uint8_t RF24::read_register(uint8_t reg)
{
- csn(LOW);
+ uint8_t result;
+
+ beginTransaction();
spi.write( R_REGISTER | ( REGISTER_MASK & reg ) );
- uint8_t result = spi.write(0xff);
+ result = spi.write(0xff);
+ endTransaction();
- csn(HIGH);
+
+
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return result;
}
@@ -68,13 +158,30 @@
{
uint8_t status;
- csn(LOW);
+ beginTransaction();
status = spi.write( W_REGISTER | ( REGISTER_MASK & reg ) );
while ( len-- )
spi.write(*buf++);
+ endTransaction();
- csn(HIGH);
-
+
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return status;
}
@@ -84,60 +191,127 @@
{
uint8_t status;
-// IF_SERIAL_DEBUG(printf(("write_register(%02x,%02x)\r\n"),reg,value));
+ IF_SERIAL_DEBUG(printf(PSTR("write_register(%02x,%02x)\r\n"),reg,value));
- csn(LOW);
+
+ beginTransaction();
status = spi.write( W_REGISTER | ( REGISTER_MASK & reg ) );
spi.write(value);
- csn(HIGH);
+ endTransaction();
+
+
+
+
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+
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+
+
+
+
+
+
+ return status;
+}
+
+/****************************************************************************/
+uint8_t RF24::write_payload(const void* buf, uint8_t len, const uint8_t writeType)
+{
+ uint8_t status;
+ const uint8_t* current = reinterpret_cast<const uint8_t*>(buf);
+
+ uint8_t data_len = rf24_min(data_len, payload_size);
+ uint8_t blank_len = dynamic_payloads_enabled ? 0 : payload_size - data_len;
+
+ //printf("[Writing %u bytes %u blanks]",data_len,blank_len);
+ IF_SERIAL_DEBUG( printf("[Writing %u bytes %u blanks]\n",data_len,blank_len); );
+
+ beginTransaction();
+ status = spi.write( W_TX_PAYLOAD );
+ while ( data_len-- )
+ spi.write(*current++);
+ while ( blank_len-- )
+ spi.write(0);
+
+ endTransaction();
+
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return status;
}
/****************************************************************************/
-uint8_t RF24::write_payload(const void* buf, uint8_t len)
-{
- uint8_t status;
-
- const uint8_t* current = reinterpret_cast<const uint8_t*>(buf);
-
- uint8_t data_len = min(len,payload_size);
- uint8_t blank_len = dynamic_payloads_enabled ? 0 : payload_size - data_len;
-
- //printf("[Writing %u bytes %u blanks]",data_len,blank_len);
-
- csn(LOW);
- status = spi.write( W_TX_PAYLOAD );
- while ( data_len-- )
- spi.write(*current++);
- while ( blank_len-- )
- spi.write(0);
- csn(HIGH);
-
- return status;
-}
-
-/****************************************************************************/
-
-uint8_t RF24::read_payload(void* buf, uint8_t len)
+uint8_t RF24::read_payload(void* buf, uint8_t data_len)
{
uint8_t status;
uint8_t* current = reinterpret_cast<uint8_t*>(buf);
- uint8_t data_len = min(len,payload_size);
+ if(data_len > payload_size) data_len = payload_size;
uint8_t blank_len = dynamic_payloads_enabled ? 0 : payload_size - data_len;
//printf("[Reading %u bytes %u blanks]",data_len,blank_len);
-
- csn(LOW);
+
+ IF_SERIAL_DEBUG( printf("[Reading %u bytes %u blanks]\n",data_len,blank_len); );
+
+ beginTransaction();
status = spi.write( R_RX_PAYLOAD );
while ( data_len-- )
*current++ = spi.write(0xff);
while ( blank_len-- )
spi.write(0xff);
- csn(HIGH);
+ endTransaction();
+
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return status;
}
@@ -145,25 +319,33 @@
uint8_t RF24::flush_rx(void)
{
- uint8_t status;
-
- csn(LOW);
- status = spi.write( FLUSH_RX );
- csn(HIGH);
-
- return status;
+ return spiTrans( FLUSH_RX );
}
/****************************************************************************/
uint8_t RF24::flush_tx(void)
{
+ return spiTrans( FLUSH_TX );
+}
+
+/****************************************************************************/
+
+uint8_t RF24::spiTrans(uint8_t cmd){
+
uint8_t status;
- csn(LOW);
- status = spi.write( FLUSH_TX );
- csn(HIGH);
+ beginTransaction();
+ status = spi.write( cmd );
+ endTransaction();
+
+
+
+
+
+
+
return status;
}
@@ -171,20 +353,14 @@
uint8_t RF24::get_status(void)
{
- uint8_t status;
-
- csn(LOW);
- status = spi.write( NOP );
- csn(HIGH);
-
- return status;
+ return spiTrans(NOP);
}
/****************************************************************************/
-
+#if !defined (MINIMAL)
void RF24::print_status(uint8_t status)
{
- printf(("STATUS\t\t = 0x%02x RX_DR=%x TX_DS=%x MAX_RT=%x RX_P_NO=%x TX_FULL=%x\r\n"),
+ printf(("STATUS\t\t = 0x%02x RX_DR=%x TX_DS=%x MAX_RT=%x RX_P_NO=%x TX_FULL=%x\r\n"),
status,
(status & _BV(RX_DR))?1:0,
(status & _BV(TX_DS))?1:0,
@@ -200,8 +376,8 @@
{
printf(("OBSERVE_TX=%02x: POLS_CNT=%x ARC_CNT=%x\r\n"),
value,
- (value >> PLOS_CNT) & 15,
- (value >> ARC_CNT) & 15
+ ((value >> PLOS_CNT) & 15),
+ ((value >> ARC_CNT) & 15)
);
}
@@ -209,63 +385,83 @@
void RF24::print_byte_register(const char* name, uint8_t reg, uint8_t qty)
{
-// char extra_tab = strlen(name) < 8 ? '\t' : 0;
- printf("%s =",name);
+printf("%s =",name);
while (qty--)
- printf((" 0x%02x"),read_register(reg++));
- printf(("\r\n"));
+ printf_P(PSTR(" 0x%02x"),read_register(reg++));
+ printf_P(PSTR("\r\n"));
+
+
+
+
+
+
}
/****************************************************************************/
void RF24::print_address_register(const char* name, uint8_t reg, uint8_t qty)
{
-// char extra_tab = strlen_P(name) < 8 ? '\t' : 0;
- printf("%s =",name);
-
+ printf_P(PSTR(PRIPSTR"\t ="),name);
+
while (qty--)
{
- uint8_t buffer[5];
+ uint8_t buffer[addr_width];
read_register(reg++,buffer,sizeof buffer);
- printf((" 0x"));
+ printf_P(PSTR(" 0x"));
uint8_t* bufptr = buffer + sizeof buffer;
while( --bufptr >= buffer )
- printf(("%02x"),*bufptr);
+ printf_P(PSTR("%02x"),*bufptr);
}
- printf(("\r\n"));
+ printf_P(PSTR("\r\n"));
+
+
+
+
+}
+#endif
+/****************************************************************************/
+
+RF24::RF24(PinName mosi, PinName miso, PinName sck, PinName _cepin, PinName _csnpin):
+ ce_pin(_cepin), csn_pin(_csnpin), p_variant(false),
+ payload_size(32), dynamic_payloads_enabled(false), addr_width(5), spi(mosi, miso, sck)
+{
+ pipe0_reading_address[0]=0;
+ spi.frequency(10000000/5); // 2Mbit, 1/5th the maximum transfer rate for the spi bus
+ spi.format(8,0); // 8-bit, ClockPhase = 0, ClockPolarity = 0
+
+ DigitalOut ce_pin(_cepin); /**< "Chip Enable" pin, activates the RX or TX role */
+ DigitalOut csn_pin(_csnpin); /**< SPI Chip select */
+
+ wait_ms(100);
+
}
-/****************************************************************************/
+
+
-RF24::RF24(PinName mosi, PinName miso, PinName sck, PinName _csnpin, PinName _cepin):
- ce_pin(_cepin), csn_pin(_csnpin), wide_band(true), p_variant(false),
- payload_size(32), ack_payload_available(false), dynamic_payloads_enabled(false),
- pipe0_reading_address(0), spi(mosi, miso, sck)
-{
- spi.frequency(10000000/5); // 2Mbit, 1/5th the maximum transfer rate for the spi bus
- spi.format(8,0); // 8-bit, ClockPhase = 0, ClockPolarity = 0
- wait_ms(100);
-}
+
+
+
/****************************************************************************/
void RF24::setChannel(uint8_t channel)
{
- // TODO: This method could take advantage of the 'wide_band' calculation
- // done in setChannel() to require certain channel spacing.
-
const uint8_t max_channel = 127;
- write_register(RF_CH,min(channel,max_channel));
+ write_register(RF_CH,rf24_min(channel,max_channel));
}
+uint8_t RF24::getChannel()
+{
+ return read_register(RF_CH);
+}
/****************************************************************************/
void RF24::setPayloadSize(uint8_t size)
{
- const uint8_t max_payload_size = 32;
- payload_size = min(size,max_payload_size);
+ payload_size = rf24_min(size,32);
}
/****************************************************************************/
@@ -277,100 +473,190 @@
/****************************************************************************/
-static const char rf24_datarate_e_str_0[] = "1MBPS";
-static const char rf24_datarate_e_str_1[] = "2MBPS";
-static const char rf24_datarate_e_str_2[] = "250KBPS";
-static const char * const rf24_datarate_e_str_P[] = {
+#if !defined (MINIMAL)
+
+static const char rf24_datarate_e_str_0[] PROGMEM = "1MBPS";
+static const char rf24_datarate_e_str_1[] PROGMEM = "2MBPS";
+static const char rf24_datarate_e_str_2[] PROGMEM = "250KBPS";
+static const char * const rf24_datarate_e_str_P[] PROGMEM = {
rf24_datarate_e_str_0,
rf24_datarate_e_str_1,
rf24_datarate_e_str_2,
};
-static const char rf24_model_e_str_0[] = "nRF24L01";
-static const char rf24_model_e_str_1[] = "nRF24L01+";
-static const char * const rf24_model_e_str_P[] = {
+static const char rf24_model_e_str_0[] PROGMEM = "nRF24L01";
+static const char rf24_model_e_str_1[] PROGMEM = "nRF24L01+";
+static const char * const rf24_model_e_str_P[] PROGMEM = {
rf24_model_e_str_0,
rf24_model_e_str_1,
};
-static const char rf24_crclength_e_str_0[] = "Disabled";
-static const char rf24_crclength_e_str_1[] = "8 bits";
-static const char rf24_crclength_e_str_2[] = "16 bits" ;
-static const char * const rf24_crclength_e_str_P[] = {
+static const char rf24_crclength_e_str_0[] PROGMEM = "Disabled";
+static const char rf24_crclength_e_str_1[] PROGMEM = "8 bits";
+static const char rf24_crclength_e_str_2[] PROGMEM = "16 bits" ;
+static const char * const rf24_crclength_e_str_P[] PROGMEM = {
rf24_crclength_e_str_0,
rf24_crclength_e_str_1,
rf24_crclength_e_str_2,
};
-static const char rf24_pa_dbm_e_str_0[] = "PA_MIN";
-static const char rf24_pa_dbm_e_str_1[] = "PA_LOW";
-static const char rf24_pa_dbm_e_str_2[] = "PA_MED";
-static const char rf24_pa_dbm_e_str_3[] = "PA_HIGH";
-static const char * const rf24_pa_dbm_e_str_P[] = {
+static const char rf24_pa_dbm_e_str_0[] PROGMEM = "PA_MIN";
+static const char rf24_pa_dbm_e_str_1[] PROGMEM = "PA_LOW";
+static const char rf24_pa_dbm_e_str_2[] PROGMEM = "PA_HIGH";
+static const char rf24_pa_dbm_e_str_3[] PROGMEM = "PA_MAX";
+static const char * const rf24_pa_dbm_e_str_P[] PROGMEM = {
rf24_pa_dbm_e_str_0,
rf24_pa_dbm_e_str_1,
rf24_pa_dbm_e_str_2,
rf24_pa_dbm_e_str_3,
};
+
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void RF24::printDetails(void)
{
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print_status(get_status());
- print_address_register(("RX_ADDR_P0-1"),RX_ADDR_P0,2);
- print_byte_register(("RX_ADDR_P2-5"),RX_ADDR_P2,4);
- print_address_register(("TX_ADDR"),TX_ADDR);
+ print_address_register(PSTR("RX_ADDR_P0-1"),RX_ADDR_P0,2);
+ print_byte_register(PSTR("RX_ADDR_P2-5"),RX_ADDR_P2,4);
+ print_address_register(PSTR("TX_ADDR\t"),TX_ADDR);
- print_byte_register(("RX_PW_P0-6"),RX_PW_P0,6);
- print_byte_register(("EN_AA"),EN_AA);
- print_byte_register(("EN_RXADDR"),EN_RXADDR);
- print_byte_register(("RF_CH"),RF_CH);
- print_byte_register(("RF_SETUP"),RF_SETUP);
- print_byte_register(("CONFIG"),CONFIG);
- print_byte_register(("DYNPD/FEATURE"),DYNPD,2);
+ print_byte_register(PSTR("RX_PW_P0-6"),RX_PW_P0,6);
+ print_byte_register(PSTR("EN_AA\t"),EN_AA);
+ print_byte_register(PSTR("EN_RXADDR"),EN_RXADDR);
+ print_byte_register(PSTR("RF_CH\t"),RF_CH);
+ print_byte_register(PSTR("RF_SETUP"),RF_SETUP);
+ print_byte_register(PSTR("CONFIG\t"),CONFIG);
+ print_byte_register(PSTR("DYNPD/FEATURE"),DYNPD,2);
- printf(("Data Rate\t = %s\r\n"), rf24_datarate_e_str_P[getDataRate()]);
- printf(("Model\t\t = %s\r\n"), rf24_model_e_str_P[isPVariant()]);
- printf(("CRC Length\t = %s\r\n"),rf24_crclength_e_str_P[getCRCLength()]);
- printf(("PA Power\t = %s\r\n"),rf24_pa_dbm_e_str_P[getPALevel()]);
+ printf_P(PSTR("Data Rate\t = "PRIPSTR"\r\n"),pgm_read_word(&rf24_datarate_e_str_P[getDataRate()]));
+ printf_P(PSTR("Model\t\t = "PRIPSTR"\r\n"),pgm_read_word(&rf24_model_e_str_P[isPVariant()]));
+ printf_P(PSTR("CRC Length\t = "PRIPSTR"\r\n"),pgm_read_word(&rf24_crclength_e_str_P[getCRCLength()]));
+ printf_P(PSTR("PA Power\t = "PRIPSTR"\r\n"), pgm_read_word(&rf24_pa_dbm_e_str_P[getPALevel()]));
+
}
+#endif
/****************************************************************************/
-void RF24::begin(void)
+bool RF24::begin(void)
{
- // Initialize pins
-// pinMode(ce_pin,OUTPUT);
-// pinMode(csn_pin,OUTPUT);
+
+ uint8_t setup=0;
+
+ mainTimer.start();
+
+ ce_pin=LOW;
+ csn_pin=HIGH;
- // Initialize spi bus
- //spi.begin();
- mainTimer.start();
-
- ce(LOW);
- csn(HIGH);
-
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// Must allow the radio time to settle else configuration bits will not necessarily stick.
// This is actually only required following power up but some settling time also appears to
// be required after resets too. For full coverage, we'll always assume the worst.
// Enabling 16b CRC is by far the most obvious case if the wrong timing is used - or skipped.
// Technically we require 4.5ms + 14us as a worst case. We'll just call it 5ms for good measure.
- // WARNING: wait_ms is based on P-variant whereby non-P *may* require different timing.
+ // WARNING: Delay is based on P-variant whereby non-P *may* require different timing.
wait_ms( 5 ) ;
+ // Reset CONFIG and enable 16-bit CRC.
+ write_register( CONFIG, 12 ) ;
+
// Set 1500uS (minimum for 32B payload in ESB@250KBPS) timeouts, to make testing a little easier
// WARNING: If this is ever lowered, either 250KBS mode with AA is broken or maximum packet
// sizes must never be used. See documentation for a more complete explanation.
- write_register(SETUP_RETR,(4 << ARD) | (15 << ARC));
+ setRetries(5,15);
- // Restore our default PA level
+ // Reset value is MAX
setPALevel( RF24_PA_MAX ) ;
- // Determine if this is a p or non-p RF24 module and then
- // reset our data rate back to default value. This works
- // because a non-P variant won't allow the data rate to
- // be set to 250Kbps.
+ // check for connected module and if this is a p nRF24l01 variant
+ //
if( setDataRate( RF24_250KBPS ) )
{
p_variant = true ;
}
+ /*setup = read_register(RF_SETUP);
+ if( setup == 0b00001110 ) // register default for nRF24L01P
+ {
+ p_variant = true ;
+ }*/
// Then set the data rate to the slowest (and most reliable) speed supported by all
// hardware.
@@ -378,157 +664,368 @@
// Initialize CRC and request 2-byte (16bit) CRC
setCRCLength( RF24_CRC_16 ) ;
-
- // Disable dynamic payloads, to match dynamic_payloads_enabled setting
+
+ // Disable dynamic payloads, to match dynamic_payloads_enabled setting - Reset value is 0
+ toggle_features();
+ write_register(FEATURE,0 );
write_register(DYNPD,0);
// Reset current status
// Notice reset and flush is the last thing we do
- write_register(STATUS,_BV(RX_DR) | _BV(TX_DS) | _BV(MAX_RT) );
+ write_register(NRF_STATUS,_BV(RX_DR) | _BV(TX_DS) | _BV(MAX_RT) );
// Set up default configuration. Callers can always change it later.
// This channel should be universally safe and not bleed over into adjacent
// spectrum.
setChannel(76);
- //setChannel(90);
// Flush buffers
flush_rx();
flush_tx();
-
- // set EN_RXADDRR to 0 to fix pipe 0 from receiving
- write_register(EN_RXADDR, 0);
+
+ powerUp(); //Power up by default when begin() is called
+
+ // Enable PTX, do not write CE high so radio will remain in standby I mode ( 130us max to transition to RX or TX instead of 1500us from powerUp )
+ // PTX should use only 22uA of power
+ write_register(CONFIG, ( read_register(CONFIG) ) & ~_BV(PRIM_RX) );
+
+ // if setup is 0 or ff then there was no response from module
+ return ( setup != 0 && setup != 0xff );
}
/****************************************************************************/
void RF24::startListening(void)
{
- write_register(CONFIG, read_register(CONFIG) | _BV(PWR_UP) | _BV(PRIM_RX));
- write_register(STATUS, _BV(RX_DR) | _BV(TX_DS) | _BV(MAX_RT) );
+
+
+ write_register(CONFIG, read_register(CONFIG) | _BV(PRIM_RX));
+ write_register(NRF_STATUS, _BV(RX_DR) | _BV(TX_DS) | _BV(MAX_RT) );
+ ce(true);
// Restore the pipe0 adddress, if exists
- if (pipe0_reading_address)
- write_register(RX_ADDR_P0, reinterpret_cast<const uint8_t*>(&pipe0_reading_address), 5);
+ if (pipe0_reading_address[0] > 0){
+ write_register(RX_ADDR_P0, pipe0_reading_address, addr_width);
+ }else{
+ closeReadingPipe(0);
+ }
// Flush buffers
- flush_rx();
- flush_tx();
+ //flush_rx();
+ if(read_register(FEATURE) & _BV(EN_ACK_PAY)){
+ flush_tx();
+ }
// Go!
- ce(HIGH);
-
- // wait for the radio to come up (130us actually only needed)
-// wait_msMicroseconds(130);
- wait_us(130);
+ //delayMicroseconds(100);
}
/****************************************************************************/
+static const uint8_t child_pipe_enable[] PROGMEM =
+{
+ ERX_P0, ERX_P1, ERX_P2, ERX_P3, ERX_P4, ERX_P5
+};
void RF24::stopListening(void)
-{
- ce(LOW);
- flush_tx();
- flush_rx();
+{
+ ce_pin=LOW;
+
+ wait_us(txRxDelay);
+
+ if(read_register(FEATURE) & _BV(EN_ACK_PAY)){
+ wait_us(txRxDelay); //200
+ flush_tx();
+ }
+ //flush_rx();
+ write_register(CONFIG, ( read_register(CONFIG) ) & ~_BV(PRIM_RX) );
+
+
+
+
+
+
+
+
+ write_register(EN_RXADDR,read_register(EN_RXADDR) | _BV(pgm_read_byte(&child_pipe_enable[0]))); // Enable RX on pipe0
+
+ //delayMicroseconds(100);
+
}
/****************************************************************************/
void RF24::powerDown(void)
{
+ ce(false); // Guarantee CE is low on powerDown
write_register(CONFIG,read_register(CONFIG) & ~_BV(PWR_UP));
}
/****************************************************************************/
+//Power up now. Radio will not power down unless instructed by MCU for config changes etc.
void RF24::powerUp(void)
{
- write_register(CONFIG,read_register(CONFIG) | _BV(PWR_UP));
+ uint8_t cfg = read_register(CONFIG);
+
+ // if not powered up then power up and wait for the radio to initialize
+ if (!(cfg & _BV(PWR_UP))){
+ write_register(CONFIG,read_register(CONFIG) | _BV(PWR_UP));
+
+ // For nRF24L01+ to go from power down mode to TX or RX mode it must first pass through stand-by mode.
+ // There must be a delay of Tpd2stby (see Table 16.) after the nRF24L01+ leaves power down mode before
+ // the CEis set high. - Tpd2stby can be up to 5ms per the 1.0 datasheet
+ wait_ms(5);
+ }
}
/******************************************************************/
-
-bool RF24::write( const void* buf, uint8_t len )
-{
- bool result = false;
-
- // Begin the write
- startWrite(buf,len);
-
- // ------------
- // At this point we could return from a non-blocking write, and then call
- // the rest after an interrupt
+#if defined (FAILURE_HANDLING)
+void RF24::errNotify(){
+ #if defined (SERIAL_DEBUG)
+ printf_P(PSTR("RF24 HARDWARE FAIL: Radio not responding, verify pin connections, wiring, etc.\r\n"));
+ #endif
+ #if defined (FAILURE_HANDLING)
+ failureDetected = 1;
+ #else
+ wait_ms(5000);
+ #endif
+}
+#endif
+/******************************************************************/
- // Instead, we are going to block here until we get TX_DS (transmission completed and ack'd)
- // or MAX_RT (maximum retries, transmission failed). Also, we'll timeout in case the radio
- // is flaky and we get neither.
-
- // IN the end, the send should be blocking. It comes back in 60ms worst case, or much faster
- // if I tighted up the retry logic. (Default settings will be 1500us.
- // Monitor the send
- uint8_t observe_tx;
- uint8_t status;
- uint32_t sent_at = mainTimer.read_ms();
- const uint32_t timeout = 500; //ms to wait for timeout
- do
- {
- status = read_register(OBSERVE_TX,&observe_tx,1);
-// IF_SERIAL_DEBUG(Serial.print(observe_tx,HEX));
- }
- while( ! ( status & ( _BV(TX_DS) | _BV(MAX_RT) ) ) && ( mainTimer.read_ms() - sent_at < timeout ) );
+//Similar to the previous write, clears the interrupt flags
+bool RF24::write( const void* buf, uint8_t len, const bool multicast )
+{
+ //Start Writing
+ startFastWrite(buf,len,multicast);
- // The part above is what you could recreate with your own interrupt handler,
- // and then call this when you got an interrupt
- // ------------
-
- // Call this when you get an interrupt
- // The status tells us three things
- // * The send was successful (TX_DS)
- // * The send failed, too many retries (MAX_RT)
- // * There is an ack packet waiting (RX_DR)
- bool tx_ok, tx_fail;
- whatHappened(tx_ok,tx_fail,ack_payload_available);
-
- //printf("%u%u%u\r\n",tx_ok,tx_fail,ack_payload_available);
-
- result = tx_ok;
-// IF_SERIAL_DEBUG(Serial.print(result?"...OK.":"...Failed"));
+ //Wait until complete or failed
+ #if defined (FAILURE_HANDLING)
+ uint32_t timer = mainTimer.read_ms();
+ #endif
+
+ while( ! ( get_status() & ( _BV(TX_DS) | _BV(MAX_RT) ))) {
+ #if defined (FAILURE_HANDLING)
+ if(mainTimer.read_ms() - timer > 85){
+ errNotify();
+ #if defined (FAILURE_HANDLING)
+ return 0;
+ #else
+ wait_ms(100);
+ #endif
+ }
+ #endif
+ }
+
+ ce_pin=LOW;
- // Handle the ack packet
- if ( ack_payload_available )
- {
- ack_payload_length = getDynamicPayloadSize();
-// IF_SERIAL_DEBUG(Serial.print("[AckPacket]/"));
-// IF_SERIAL_DEBUG(Serial.println(ack_payload_length,DEC));
- }
+ uint8_t status = write_register(NRF_STATUS,_BV(RX_DR) | _BV(TX_DS) | _BV(MAX_RT) );
- // Yay, we are done.
-
- // Power down
-// powerDown();
+ //Max retries exceeded
+ if( status & _BV(MAX_RT)){
+ flush_tx(); //Only going to be 1 packet int the FIFO at a time using this method, so just flush
+ return 0;
+ }
+ //TX OK 1 or 0
+ return 1;
+}
- // Flush buffers (Is this a relic of past experimentation, and not needed anymore?
-// flush_tx();
-
- return result;
+bool RF24::write( const void* buf, uint8_t len ){
+ return write(buf,len,0);
}
/****************************************************************************/
-void RF24::startWrite( const void* buf, uint8_t len )
+//For general use, the interrupt flags are not important to clear
+bool RF24::writeBlocking( const void* buf, uint8_t len, uint32_t timeout )
+{
+ //Block until the FIFO is NOT full.
+ //Keep track of the MAX retries and set auto-retry if seeing failures
+ //This way the FIFO will fill up and allow blocking until packets go through
+ //The radio will auto-clear everything in the FIFO as long as CE remains high
+
+ uint32_t timer = mainTimer.read_ms(); //Get the time that the payload transmission started
+
+ while( ( get_status() & ( _BV(TX_FULL) ))) { //Blocking only if FIFO is full. This will loop and block until TX is successful or timeout
+
+ if( get_status() & _BV(MAX_RT)){ //If MAX Retries have been reached
+ reUseTX(); //Set re-transmit and clear the MAX_RT interrupt flag
+ if(mainTimer.read_ms() - timer > timeout){ return 0; } //If this payload has exceeded the user-defined timeout, exit and return 0
+ }
+ #if defined (FAILURE_HANDLING)
+ if(mainTimer.read_ms() - timer > (timeout+85) ){
+ errNotify();
+ #if defined (FAILURE_HANDLING)
+ return 0;
+ #endif
+ }
+ #endif
+
+ }
+
+ //Start Writing
+ startFastWrite(buf,len,0); //Write the payload if a buffer is clear
+
+ return 1; //Return 1 to indicate successful transmission
+}
+
+/****************************************************************************/
+
+void RF24::reUseTX(){
+ write_register(NRF_STATUS,_BV(MAX_RT) ); //Clear max retry flag
+ spiTrans( REUSE_TX_PL );
+ ce_pin=LOW; //Re-Transfer packet
+ ce_pin=HIGH;
+}
+
+/****************************************************************************/
+
+bool RF24::writeFast( const void* buf, uint8_t len, const bool multicast )
{
- // Transmitter power-up
- write_register(CONFIG, ( read_register(CONFIG) | _BV(PWR_UP) ) & ~_BV(PRIM_RX) );
-// wait_msMicroseconds(150);
- wait_us(130);
+ //Block until the FIFO is NOT full.
+ //Keep track of the MAX retries and set auto-retry if seeing failures
+ //Return 0 so the user can control the retrys and set a timer or failure counter if required
+ //The radio will auto-clear everything in the FIFO as long as CE remains high
+
+ #if defined (FAILURE_HANDLING)
+ uint32_t timer = mainTimer.read_ms();
+ #endif
+
+ while( ( get_status() & ( _BV(TX_FULL) ))) { //Blocking only if FIFO is full. This will loop and block until TX is successful or fail
+
+ if( get_status() & _BV(MAX_RT)){
+ //reUseTX(); //Set re-transmit
+ write_register(NRF_STATUS,_BV(MAX_RT) ); //Clear max retry flag
+ return 0; //Return 0. The previous payload has been retransmitted
+ //From the user perspective, if you get a 0, just keep trying to send the same payload
+ }
+ #if defined (FAILURE_HANDLING)
+ if(mainTimer.read_ms() - timer > 85 ){
+ errNotify();
+ #if defined (FAILURE_HANDLING)
+ return 0;
+ #endif
+ }
+ #endif
+ }
+ //Start Writing
+ startFastWrite(buf,len,multicast);
+
+ return 1;
+}
+
+bool RF24::writeFast( const void* buf, uint8_t len ){
+ return writeFast(buf,len,0);
+}
+
+/****************************************************************************/
+
+//Per the documentation, we want to set PTX Mode when not listening. Then all we do is write data and set CE high
+//In this mode, if we can keep the FIFO buffers loaded, packets will transmit immediately (no 130us delay)
+//Otherwise we enter Standby-II mode, which is still faster than standby mode
+//Also, we remove the need to keep writing the config register over and over and delaying for 150 us each time if sending a stream of data
+
+void RF24::startFastWrite( const void* buf, uint8_t len, const bool multicast, bool startTx){ //TMRh20
+
+ //write_payload( buf,len);
+ write_payload( buf, len,multicast ? W_TX_PAYLOAD_NO_ACK : W_TX_PAYLOAD ) ;
+ if(startTx){
+ ce_pin=HIGH;
+ }
+
+}
+
+/****************************************************************************/
+
+//Added the original startWrite back in so users can still use interrupts, ack payloads, etc
+//Allows the library to pass all tests
+void RF24::startWrite( const void* buf, uint8_t len, const bool multicast ){
// Send the payload
- write_payload( buf, len );
+
+ //write_payload( buf, len );
+ write_payload( buf, len,multicast? W_TX_PAYLOAD_NO_ACK : W_TX_PAYLOAD ) ;
+ ce_pin=HIGH;
+
+ wait_us(10);
+
+ ce_pin=LOW;
+
+
+}
+
+/****************************************************************************/
+
+bool RF24::rxFifoFull(){
+ return read_register(FIFO_STATUS) & _BV(RX_FULL);
+}
+/****************************************************************************/
+
+bool RF24::txStandBy(){
+
+ #if defined (FAILURE_HANDLING)
+ uint32_t timeout = mainTimer.read_ms();
+ #endif
+ while( ! (read_register(FIFO_STATUS) & _BV(TX_EMPTY)) ){
+ if( get_status() & _BV(MAX_RT)){
+ write_register(NRF_STATUS,_BV(MAX_RT) );
+ ce_pin=LOW;
+ flush_tx(); //Non blocking, flush the data
+ return 0;
+ }
+ #if defined (FAILURE_HANDLING)
+ if( mainTimer.read_ms() - timeout > 85){
+ errNotify();
+ #if defined (FAILURE_HANDLING)
+ return 0;
+ #endif
+ }
+ #endif
+ }
- // Allons!
- ce(HIGH);
-// wait_msMicroseconds(15);
- wait_us(15);
- ce(LOW);
+ ce_pin=LOW; //Set STANDBY-I mode
+ return 1;
+}
+
+/****************************************************************************/
+
+bool RF24::txStandBy(uint32_t timeout, bool startTx){
+
+ if(startTx){
+ stopListening();
+ ce_pin=HIGH;
+ }
+ uint32_t start = mainTimer.read_ms();
+
+ while( ! (read_register(FIFO_STATUS) & _BV(TX_EMPTY)) ){
+ if( get_status() & _BV(MAX_RT)){
+ write_register(NRF_STATUS,_BV(MAX_RT) );
+ ce_pin=LOW; //Set re-transmit
+ ce_pin=HIGH;
+ if(mainTimer.read_ms() - start >= timeout){
+ ce_pin=LOW;; flush_tx(); return 0;
+ }
+ }
+ #if defined (FAILURE_HANDLING)
+ if( mainTimer.read_ms() - start > (timeout+85)){
+ errNotify();
+ #if defined (FAILURE_HANDLING)
+ return 0;
+ #endif
+ }
+ #endif
+ }
+
+
+ ce_pin=LOW; //Set STANDBY-I mode
+ return 1;
+
+}
+
+/****************************************************************************/
+
+void RF24::maskIRQ(bool tx, bool fail, bool rx){
+
+ write_register(CONFIG, ( read_register(CONFIG) ) | fail << MASK_MAX_RT | tx << MASK_TX_DS | rx << MASK_RX_DR );
}
/****************************************************************************/
@@ -537,11 +1034,21 @@
{
uint8_t result = 0;
- csn(LOW);
+
+
+
+
+
+
+
+
+ beginTransaction();
spi.write( R_RX_PL_WID );
result = spi.write(0xff);
- csn(HIGH);
+ endTransaction();
+
+ if(result > 32) { flush_rx(); wait_ms(2); return 0; }
return result;
}
@@ -556,45 +1063,32 @@
bool RF24::available(uint8_t* pipe_num)
{
- uint8_t status = get_status();
-
- // Too noisy, enable if you really want lots o data!!
- //IF_SERIAL_DEBUG(print_status(status));
-
- bool result = ( status & _BV(RX_DR) );
-
- if (result)
- {
- // If the caller wants the pipe number, include that
- if ( pipe_num )
- *pipe_num = ( status >> RX_P_NO ) & 7;
+ if (!( read_register(FIFO_STATUS) & _BV(RX_EMPTY) )) {
- // Clear the status bit
-
- // ??? Should this REALLY be cleared now? Or wait until we
- // actually READ the payload?
-
- write_register(STATUS,_BV(RX_DR) );
-
- // Handle ack payload receipt
- if ( status & _BV(TX_DS) )
- {
- write_register(STATUS,_BV(TX_DS));
+ // If the caller wants the pipe number, include that
+ if ( pipe_num ) {
+ uint8_t status = get_status();
+ *pipe_num = ( status >> RX_P_NO ) & 7;
+ }
+ return 1;
}
- }
-
- return result;
+
+
+ return 0;
+
+
}
/****************************************************************************/
-bool RF24::read( void* buf, uint8_t len )
-{
+void RF24::read( void* buf, uint8_t len ){
+
// Fetch the payload
read_payload( buf, len );
- // was this the last of the data available?
- return read_register(FIFO_STATUS) & _BV(RX_EMPTY);
+ //Clear the two possible interrupt flags with one command
+ write_register(NRF_STATUS,_BV(RX_DR) | _BV(MAX_RT) | _BV(TX_DS) );
+
}
/****************************************************************************/
@@ -603,7 +1097,7 @@
{
// Read the status & reset the status in one easy call
// Or is that such a good idea?
- uint8_t status = write_register(STATUS,_BV(RX_DR) | _BV(TX_DS) | _BV(MAX_RT) );
+ uint8_t status = write_register(NRF_STATUS,_BV(RX_DR) | _BV(TX_DS) | _BV(MAX_RT) );
// Report to the user what happened
tx_ok = status & _BV(TX_DS);
@@ -618,63 +1112,128 @@
// Note that AVR 8-bit uC's store this LSB first, and the NRF24L01(+)
// expects it LSB first too, so we're good.
- write_register(RX_ADDR_P0, reinterpret_cast<uint8_t*>(&value), 5);
- write_register(TX_ADDR, reinterpret_cast<uint8_t*>(&value), 5);
-
- const uint8_t max_payload_size = 32;
- write_register(RX_PW_P0,min(payload_size,max_payload_size));
+ write_register(RX_ADDR_P0, reinterpret_cast<uint8_t*>(&value), addr_width);
+ write_register(TX_ADDR, reinterpret_cast<uint8_t*>(&value), addr_width);
+
- flush_tx();
+ //const uint8_t max_payload_size = 32;
+ //write_register(RX_PW_P0,rf24_min(payload_size,max_payload_size));
+ write_register(RX_PW_P0,payload_size);
}
/****************************************************************************/
+void RF24::openWritingPipe(const uint8_t *address)
+{
+ // Note that AVR 8-bit uC's store this LSB first, and the NRF24L01(+)
+ // expects it LSB first too, so we're good.
-static const uint8_t child_pipe[] =
+ write_register(RX_ADDR_P0,address, addr_width);
+ write_register(TX_ADDR, address, addr_width);
+
+ //const uint8_t max_payload_size = 32;
+ //write_register(RX_PW_P0,rf24_min(payload_size,max_payload_size));
+ write_register(RX_PW_P0,payload_size);
+}
+
+/****************************************************************************/
+static const uint8_t child_pipe[] PROGMEM =
{
RX_ADDR_P0, RX_ADDR_P1, RX_ADDR_P2, RX_ADDR_P3, RX_ADDR_P4, RX_ADDR_P5
};
-static const uint8_t child_payload_size[] =
+static const uint8_t child_payload_size[] PROGMEM =
{
RX_PW_P0, RX_PW_P1, RX_PW_P2, RX_PW_P3, RX_PW_P4, RX_PW_P5
};
-static const uint8_t child_pipe_enable[] =
-{
- ERX_P0, ERX_P1, ERX_P2, ERX_P3, ERX_P4, ERX_P5
-};
+
void RF24::openReadingPipe(uint8_t child, uint64_t address)
{
// If this is pipe 0, cache the address. This is needed because
// openWritingPipe() will overwrite the pipe 0 address, so
// startListening() will have to restore it.
- if (child == 0)
- pipe0_reading_address = address;
+ if (child == 0){
+ memcpy(pipe0_reading_address,&address,addr_width);
+ }
if (child <= 6)
{
// For pipes 2-5, only write the LSB
if ( child < 2 )
- write_register(child_pipe[child], reinterpret_cast<const uint8_t*>(&address), 5);
+ write_register(pgm_read_byte(&child_pipe[child]), reinterpret_cast<const uint8_t*>(&address), addr_width);
else
- write_register(child_pipe[child], reinterpret_cast<const uint8_t*>(&address), 1);
+ write_register(pgm_read_byte(&child_pipe[child]), reinterpret_cast<const uint8_t*>(&address), 1);
- write_register(child_payload_size[child],payload_size);
+ write_register(pgm_read_byte(&child_payload_size[child]),payload_size);
// Note it would be more efficient to set all of the bits for all open
// pipes at once. However, I thought it would make the calling code
// more simple to do it this way.
- write_register(EN_RXADDR,read_register(EN_RXADDR) | _BV(child_pipe_enable[child]));
+ write_register(EN_RXADDR,read_register(EN_RXADDR) | _BV(pgm_read_byte(&child_pipe_enable[child])));
+ }
+}
+
+/****************************************************************************/
+void RF24::setAddressWidth(uint8_t a_width){
+
+ if(a_width -= 2){
+ write_register(SETUP_AW,a_width%4);
+ addr_width = (a_width%4) + 2;
+ }
+
+}
+
+/****************************************************************************/
+
+void RF24::openReadingPipe(uint8_t child, const uint8_t *address)
+{
+ // If this is pipe 0, cache the address. This is needed because
+ // openWritingPipe() will overwrite the pipe 0 address, so
+ // startListening() will have to restore it.
+ if (child == 0){
+ memcpy(pipe0_reading_address,address,addr_width);
}
+ if (child <= 6)
+ {
+ // For pipes 2-5, only write the LSB
+ if ( child < 2 ){
+ write_register(pgm_read_byte(&child_pipe[child]), address, addr_width);
+ }else{
+ write_register(pgm_read_byte(&child_pipe[child]), address, 1);
+ }
+ write_register(pgm_read_byte(&child_payload_size[child]),payload_size);
+
+ // Note it would be more efficient to set all of the bits for all open
+ // pipes at once. However, I thought it would make the calling code
+ // more simple to do it this way.
+ write_register(EN_RXADDR,read_register(EN_RXADDR) | _BV(pgm_read_byte(&child_pipe_enable[child])));
+
+ }
+}
+
+/****************************************************************************/
+
+void RF24::closeReadingPipe( uint8_t pipe )
+{
+ write_register(EN_RXADDR,read_register(EN_RXADDR) & ~_BV(pgm_read_byte(&child_pipe_enable[pipe])));
}
/****************************************************************************/
void RF24::toggle_features(void)
{
- csn(LOW);
- spi.write( ACTIVATE );
- spi.write( 0x73 );
- csn(HIGH);
+ beginTransaction();
+ spi.write( ACTIVATE );
+ spi.write( 0x73 );
+ endTransaction();
+
+
+
+
+
+
+
+
+
}
/****************************************************************************/
@@ -682,17 +1241,12 @@
void RF24::enableDynamicPayloads(void)
{
// Enable dynamic payload throughout the system
- write_register(FEATURE,read_register(FEATURE) | _BV(EN_DPL) );
- // If it didn't work, the features are not enabled
- if ( ! read_register(FEATURE) )
- {
- // So enable them and try again
- toggle_features();
+ //toggle_features();
write_register(FEATURE,read_register(FEATURE) | _BV(EN_DPL) );
- }
+
-// IF_SERIAL_DEBUG(printf("FEATURE=%i\r\n",read_register(FEATURE)));
+ IF_SERIAL_DEBUG(printf("FEATURE=%i\r\n",read_register(FEATURE)));
// Enable dynamic payload on all pipes
//
@@ -711,23 +1265,31 @@
// enable ack payload and dynamic payload features
//
- write_register(FEATURE,read_register(FEATURE) | _BV(EN_ACK_PAY) | _BV(EN_DPL) );
+ //toggle_features();
+ write_register(FEATURE,read_register(FEATURE) | _BV(EN_ACK_PAY) | _BV(EN_DPL) );
- // If it didn't work, the features are not enabled
- if ( ! read_register(FEATURE) )
- {
- // So enable them and try again
- toggle_features();
- write_register(FEATURE,read_register(FEATURE) | _BV(EN_ACK_PAY) | _BV(EN_DPL) );
- }
-
-// IF_SERIAL_DEBUG(printf("FEATURE=%i\r\n",read_register(FEATURE)));
+ IF_SERIAL_DEBUG(printf("FEATURE=%i\r\n",read_register(FEATURE)));
//
// Enable dynamic payload on pipes 0 & 1
//
write_register(DYNPD,read_register(DYNPD) | _BV(DPL_P1) | _BV(DPL_P0));
+ dynamic_payloads_enabled = true;
+}
+
+/****************************************************************************/
+
+void RF24::enableDynamicAck(void){
+ //
+ // enable dynamic ack features
+ //
+ //toggle_features();
+ write_register(FEATURE,read_register(FEATURE) | _BV(EN_DYN_ACK) );
+
+ IF_SERIAL_DEBUG(printf("FEATURE=%i\r\n",read_register(FEATURE)));
+
+
}
/****************************************************************************/
@@ -736,23 +1298,22 @@
{
const uint8_t* current = reinterpret_cast<const uint8_t*>(buf);
- csn(LOW);
- spi.write( W_ACK_PAYLOAD | ( pipe & 7 ) );
- const uint8_t max_payload_size = 32;
- uint8_t data_len = min(len,max_payload_size);
+ uint8_t data_len = rf24_min(len,32);
+
+ beginTransaction();
+ spi.write(W_ACK_PAYLOAD | ( pipe & 7 ) );
+
while ( data_len-- )
spi.write(*current++);
+ endTransaction();
- csn(HIGH);
}
/****************************************************************************/
bool RF24::isAckPayloadAvailable(void)
{
- bool result = ack_payload_available;
- ack_payload_available = false;
- return result;
+ return ! (read_register(FIFO_STATUS) & _BV(RX_EMPTY));
}
/****************************************************************************/
@@ -807,63 +1368,27 @@
/****************************************************************************/
-void RF24::setPALevel(rf24_pa_dbm_e level)
+void RF24::setPALevel(uint8_t level)
{
- uint8_t setup = read_register(RF_SETUP) ;
- setup &= ~(_BV(RF_PWR_LOW) | _BV(RF_PWR_HIGH)) ;
+
+ uint8_t setup = read_register(RF_SETUP) & 248;
- // switch uses RAM (evil!)
- if ( level == RF24_PA_MAX )
- {
- setup |= (_BV(RF_PWR_LOW) | _BV(RF_PWR_HIGH)) ;
- }
- else if ( level == RF24_PA_HIGH )
- {
- setup |= _BV(RF_PWR_HIGH) ;
- }
- else if ( level == RF24_PA_LOW )
- {
- setup |= _BV(RF_PWR_LOW);
- }
- else if ( level == RF24_PA_MIN )
- {
- // nothing
- }
- else if ( level == RF24_PA_ERROR )
- {
- // On error, go to maximum PA
- setup |= (_BV(RF_PWR_LOW) | _BV(RF_PWR_HIGH)) ;
+ if(level > 3){ // If invalid level, go to max PA
+ level = (RF24_PA_MAX << 1) + 1; // +1 to support the SI24R1 chip extra bit
+ }else{
+ level = (level << 1) + 1; // Else set level as requested
}
- write_register( RF_SETUP, setup ) ;
+
+ write_register( RF_SETUP, setup |= level ) ; // Write it to the chip
}
/****************************************************************************/
-rf24_pa_dbm_e RF24::getPALevel(void)
+uint8_t RF24::getPALevel(void)
{
- rf24_pa_dbm_e result = RF24_PA_ERROR ;
- uint8_t power = read_register(RF_SETUP) & (_BV(RF_PWR_LOW) | _BV(RF_PWR_HIGH)) ;
- // switch uses RAM (evil!)
- if ( power == (_BV(RF_PWR_LOW) | _BV(RF_PWR_HIGH)) )
- {
- result = RF24_PA_MAX ;
- }
- else if ( power == _BV(RF_PWR_HIGH) )
- {
- result = RF24_PA_HIGH ;
- }
- else if ( power == _BV(RF_PWR_LOW) )
- {
- result = RF24_PA_LOW ;
- }
- else
- {
- result = RF24_PA_MIN ;
- }
-
- return result ;
+ return (read_register(RF_SETUP) & (_BV(RF_PWR_LOW) | _BV(RF_PWR_HIGH))) >> 1 ;
}
/****************************************************************************/
@@ -874,14 +1399,17 @@
uint8_t setup = read_register(RF_SETUP) ;
// HIGH and LOW '00' is 1Mbs - our default
- wide_band = false ;
setup &= ~(_BV(RF_DR_LOW) | _BV(RF_DR_HIGH)) ;
+
+
+ txRxDelay=85;
+
if( speed == RF24_250KBPS )
{
// Must set the RF_DR_LOW to 1; RF_DR_HIGH (used to be RF_DR) is already 0
// Making it '10'.
- wide_band = false ;
setup |= _BV( RF_DR_LOW ) ;
+ txRxDelay=155;
}
else
{
@@ -889,13 +1417,8 @@
// Making it '01'
if ( speed == RF24_2MBPS )
{
- wide_band = true ;
setup |= _BV(RF_DR_HIGH);
- }
- else
- {
- // 1Mbs
- wide_band = false ;
+ txRxDelay=65;
}
}
write_register(RF_SETUP,setup);
@@ -905,11 +1428,6 @@
{
result = true;
}
- else
- {
- wide_band = false;
- }
-
return result;
}
@@ -919,7 +1437,7 @@
{
rf24_datarate_e result ;
uint8_t dr = read_register(RF_SETUP) & (_BV(RF_DR_LOW) | _BV(RF_DR_HIGH));
-
+
// switch uses RAM (evil!)
// Order matters in our case below
if ( dr == _BV(RF_DR_LOW) )
@@ -945,10 +1463,11 @@
void RF24::setCRCLength(rf24_crclength_e length)
{
uint8_t config = read_register(CONFIG) & ~( _BV(CRCO) | _BV(EN_CRC)) ;
-
+
+ // switch uses RAM (evil!)
if ( length == RF24_CRC_DISABLED )
{
- // Do nothing, we turned it off above.
+ // Do nothing, we turned it off above.
}
else if ( length == RF24_CRC_8 )
{
@@ -967,9 +1486,11 @@
rf24_crclength_e RF24::getCRCLength(void)
{
rf24_crclength_e result = RF24_CRC_DISABLED;
+
uint8_t config = read_register(CONFIG) & ( _BV(CRCO) | _BV(EN_CRC)) ;
-
- if ( config & _BV(EN_CRC ) )
+ uint8_t AA = read_register(EN_AA);
+
+ if ( config & _BV(EN_CRC ) || AA)
{
if ( config & _BV(CRCO) )
result = RF24_CRC_16;
@@ -993,11 +1514,3 @@
{
write_register(SETUP_RETR,(delay&0xf)<<ARD | (count&0xf)<<ARC);
}
-
-uint8_t RF24::min(uint8_t a, uint8_t b)
-{
- if(a < b)
- return a;
- else
- return b;
-}