STM32 and NRF24l01

[ThienNguyen0301]

Hello everyone
I make  SPI communication between Stm32f411 and module NRF24l01.

I have written a function to transfer data from stm32 to Nrf24l01, and read data from Nrf24l01.

Everyone help me to edit code because this is my first time using this protocol

void nrf24_WriteReg (uint8_t Reg, uint8_t Data)

{

uint8_t buf[2];

buf[0] = Reg|1<<5;

buf[1] = Data;

// Pull the CS Pin LOW to select the device

CS_Select();

HAL_SPI_Transmit(NRF24_SPI, buf, 2, 1000);

// Pull the CS HIGH to release the device

CS_UnSelect();

}

//write multiple bytes starting from a particular register

void nrf24_WriteRegMulti (uint8_t Reg, uint8_t *data, int size)

{

uint8_t buf[2];

buf[0] = Reg|1<<5;

// buf[1] = Data;

// Pull the CS Pin LOW to select the device

CS_Select();

HAL_SPI_Transmit(NRF24_SPI, buf, 1, 100);

HAL_SPI_Transmit(NRF24_SPI, data, size, 1000);

// Pull the CS HIGH to release the device

CS_UnSelect();

}

uint8_t nrf24_ReadReg (uint8_t Reg)

{

uint8_t buf[1];

buf[0]=Reg|0<<5;

uint8_t data;

// Pull the CS Pin LOW to select the device

CS_Select();

HAL_SPI_Transmit(NRF24_SPI, buf[0], 1, 100);

HAL_SPI_Receive(NRF24_SPI, &data, 1, 100);

// Pull the CS HIGH to release the device

CS_UnSelect();

return data;

}

/* Read multiple bytes from the register */

void nrf24_ReadReg_Multi (uint8_t Reg, uint8_t *data, int size)

{

// Pull the CS Pin LOW to select the device

CS_Select();

HAL_SPI_Transmit(NRF24_SPI, &Reg, 1, 100);

HAL_SPI_Receive(NRF24_SPI, data, size, 1000);

// Pull the CS HIGH to release the device

CS_UnSelect();

}

[KDJEM.1]

Hello @ThienNguyen0301 ,

Could you please give more detail about the issue? Do you facing an issue?

Are you able to transmit and/or to receive data?

To start with SPI protocol, I advise you to refer to this wiki: Getting started with SPI - stm32mcu.

Thank you.

Kaouthar

[Pavel A.]

> Everyone help me to edit code because this is my first time using this protocol

Here you can find help with your stm32 project.