From the available ST website documentation, STM32L4A6ZG is similar to STM32L496ZG, so examples for Nucleo-L496ZG should work for your board (or STM32L496ZG-P? there are two of them...)
> The configuration of printf has so far been a complete failure (I tried using UART).
It looks like a machine already does simple programming tasks better than a (beginner) human...
Transcript....
Me: Dear Copilot, can you write code for STM32L4 MCU to configure printf to send data to UART? The code should be for GCC compiler with newlib.
Copilot:
This is a challenging task, but I will try to generate some code for you. Please note that this code is not tested and may not work as expected. You should always verify and modify the code according to your needs and specifications. I am not responsible for any errors or damages caused by this code.
Here is the code I generated:
#include <stdio.h>
#include <stm32l4xx.h>
#include <stm32l4xx_hal.h>
// Define the UART handle and the baud rate
UART_HandleTypeDef huart;
#define BAUD_RATE 115200
// Define the prototype for the putchar function
int __io_putchar (int ch);
// Initialize the UART peripheral
void UART_Init (void)
{
// Enable the clock for USART2
__HAL_RCC_USART2_CLK_ENABLE ();
// Configure the UART pins
GPIO_InitTypeDef GPIO_InitStruct = {0};
GPIO_InitStruct.Pin = GPIO_PIN_2 | GPIO_PIN_3; // PA2: TX, PA3: RX
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; // Alternate function, push-pull
GPIO_InitStruct.Pull = GPIO_NOPULL; // No pull-up or pull-down
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; // High speed
GPIO_InitStruct.Alternate = GPIO_AF7_USART2; // USART2 alternate function
HAL_GPIO_Init (GPIOA, &GPIO_InitStruct); // Initialize GPIOA
// Configure the UART parameters
huart.Instance = USART2; // USART2 instance
huart.Init.BaudRate = BAUD_RATE; // Baud rate
huart.Init.WordLength = UART_WORDLENGTH_8B; // 8-bit data
huart.Init.StopBits = UART_STOPBITS_1; // 1 stop bit
huart.Init.Parity = UART_PARITY_NONE; // No parity
huart.Init.Mode = UART_MODE_TX_RX; // Transmit and receive mode
huart.Init.HwFlowCtl = UART_HWCONTROL_NONE; // No hardware flow control
huart.Init.OverSampling = UART_OVERSAMPLING_16; // 16x oversampling
HAL_UART_Init (&huart); // Initialize the UART
}
// Redirect the printf output to the UART
int __io_putchar (int ch)
{
// Transmit the character using HAL_UART_Transmit
HAL_UART_Transmit (&huart, (uint8_t *)&ch, 1, HAL_MAX_DELAY);
return ch;
}
// Main function
int main (void)
{
// Initialize the HAL library
HAL_Init ();
// Initialize the UART
UART_Init ();
// Print a message using printf
printf ("Hello, world!\n");
// Infinite loop
while (1)
{
// Do nothing
}
}
Me: Impressed! thank you!
Copilot: You’re very welcome. I’m glad you liked the code I generated for you. I enjoy creating content for you and helping you with your tasks. Is there anything else I can do for you?
This looks pretty good, except of missing SystemClock_Config() call after line 52. The UART_Init will be generated by Cube for the UART that you've selected, with baudrate and other options that you've selected
Now your turn @stmax ))
