RadioLibSmol/examples/CC1101/CC1101_Transmit_Blocking/CC1101_Transmit_Blocking.ino
Crsarmv7l b9c214db95
[CC1101] FIFO Refills to transmit packets up to 255 bytes (#1404)
* Update CC1101.h

Add Max packet size for FIFO Refills

* Define FIFO Size, Max packet Length for FIFO refills

* FIFO REFILL

- Go through FSTXON State
- Check MARCSTATE to ensure ready to tx
- Initial FIFO fill
- Check FIFO bytes twice in accordance with errata
- Refill FIFO
- Check MARCSTATE is idle before returning

* Fix typos

* Fix another typo

* min -> std::min per build check

* Revert std::min back to min

* Use RADIOLIB_MIN Macro instead of min

* Move MARC State check for Idle to finishTransmit function

Change allows startTransmit to stop blocking once the last bytes are added to the FIFO

* Add timeouts for both MARC state checks

* Fix typo

* No interrupt for packets bigger than 64 bytes

* Initialize state as RADIOLIB_ERR_NONE if avoiding ISR

* Update example with packet size and discussion link

* Update example with new packet size and discussion link

* Update example, clarify blocking on greater than 64 bytes link discussion

* Update doxygen comments for 255 byte limit, limitations and discussion link
2025-02-13 17:20:56 +01:00

87 lines
2.4 KiB
C++

/*
RadioLib CC1101 Blocking Transmit Example
This example transmits packets using CC1101 FSK radio module.
Each packet contains up to 255 bytes of data with some limitations (https://github.com/jgromes/RadioLib/discussions/1138), in the form of:
- Arduino String
- null-terminated char array (C-string)
- arbitrary binary data (byte array)
Using blocking transmit is not recommended, as it will lead
to inefficient use of processor time!
Instead, interrupt transmit is recommended.
For default module settings, see the wiki page
https://github.com/jgromes/RadioLib/wiki/Default-configuration#cc1101
For full API reference, see the GitHub Pages
https://jgromes.github.io/RadioLib/
*/
// include the library
#include <RadioLib.h>
// CC1101 has the following connections:
// CS pin: 10
// GDO0 pin: 2
// RST pin: unused
// GDO2 pin: 3
CC1101 radio = new Module(10, 2, RADIOLIB_NC, 3);
// or detect the pinout automatically using RadioBoards
// https://github.com/radiolib-org/RadioBoards
/*
#define RADIO_BOARD_AUTO
#include <RadioBoards.h>
Radio radio = new RadioModule();
*/
void setup() {
Serial.begin(9600);
// initialize CC1101 with default settings
Serial.print(F("[CC1101] Initializing ... "));
int state = radio.begin();
if (state == RADIOLIB_ERR_NONE) {
Serial.println(F("success!"));
} else {
Serial.print(F("failed, code "));
Serial.println(state);
while (true) { delay(10); }
}
}
// counter to keep track of transmitted packets
int count = 0;
void loop() {
Serial.print(F("[CC1101] Transmitting packet ... "));
// you can transmit C-string or Arduino string up to 255 characters long
String str = "Hello World! #" + String(count++);
int state = radio.transmit(str);
// you can also transmit byte array up to 255 bytes long with some limitations; https://github.com/jgromes/RadioLib/discussions/1138
/*
byte byteArr[] = {0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF};
int state = radio.transmit(byteArr, 8);
*/
if (state == RADIOLIB_ERR_NONE) {
// the packet was successfully transmitted
Serial.println(F("success!"));
} else if (state == RADIOLIB_ERR_PACKET_TOO_LONG) {
// the supplied packet was longer than 255 bytes
Serial.println(F("too long!"));
} else {
// some other error occurred
Serial.print(F("failed, code "));
Serial.println(state);
}
// wait for a second before transmitting again
delay(1000);
}