SI4432 ISM Transceiver driver for esp-idf
MIT License
SI4432 ISM Transceiver driver for esp-idf.
I refered this.
2.54mm pitch 433MHz
1.27mm pitch 433MHz Pinout is here
ESP-IDF V4.4/V5.x. ESP-IDF V5.0 is required when using ESP32-C2. ESP-IDF V5.1 is required when using ESP32-C6.
git clone https://github.com/nopnop2002/esp-idf-si4432
cd esp-idf-si4432
idf.py set-target {esp32/esp32s2/esp32s3/esp32c2/esp32c3/esp32c6}
idf.py menuconfig
idf.py flash
Note for ESP32C3 For some reason, there are development boards that cannot use GPIO06, GPIO08, GPIO09, GPIO19 for SPI clock pins. According to the ESP32C3 specifications, these pins can also be used as SPI clocks. I used a raw ESP-C3-13 to verify that these pins could be used as SPI clocks.
The ESP32 series has three SPI BUSs. SPI1_HOST is used for communication with Flash memory. You can use SPI2_HOST and SPI3_HOST freely. When you use SDSPI(SD Card via SPI), SDSPI uses SPI2_HOST BUS. When using this module at the same time as SDSPI or other SPI device using SPI2_HOST, it needs to be changed to SPI3_HOST. When you don't use SDSPI, both SPI2_HOST and SPI3_HOST will work. It was called HSPI_HOST / VSPI_HOST, but it is not defined in SoCs other than ESP32.
SI4432 | ESP32 | ESP32-S2/S3 | ESP32-C2/C3/C6 | |
---|---|---|---|---|
MISO | -- | GPIO19 | GPIO37 | GPIO4 |
SCK | -- | GPIO18 | GPIO36 | GPIO3 |
MOSI | -- | GPIO23 | GPIO35 | GPIO2 |
SEL | -- | GPIO5 | GPIO34 | GPIO1 |
SDN | -- | GPIO15 | GPIO40 | GPIO5 |
IRQ | -- | GPIO16 | GPIO41 | GPIO6 |
GND | -- | GND | GND | GND |
VCC | -- | 3.3V | 3.3V | 3.3V |
You can change it to any pin using menuconfig.
nRF905 | cc1101 | si4432 | |
---|---|---|---|
Manufacturer | Nordic Semiconductor | Texas Instrument | Silicon Labs |
Frequency | 433/868/915MHz | 315/433/868/915MHz | 315/433/868/915MHz |
Maximum Payload | 32Byte | 64Byte | 64Byte |
FiFo for reception | 32Byte*1 | 64Byte*1 | 64Byte*1 |
FiFo for transmission | 32Byte*1 | 64Byte*1 | 64Byte*1 |
CRC Length | 8/16bits | 16bits | 8/16bits |
Acknowledgement Payload | No | No | No |
Modulation format | GFSK | 2-FSK/4-FSK/GFSK/ASK/OOK/MSK | FSK/GFSK/OOK |