How to use the for loop in a simple sequence with STM32H7 in a SPI transmission?

[ABlum.2]

Hello everyone,

I am trying to replace a simple code in C inside a STM32H7 that goes like this:

function(0, &array[0]);
 
function(1, &array[1]);
 
function(2, &array[2]);
 
function(3, &array[3]);
 
function(4, &array[4]);

with

enum_variable_t index ;
 
for(index = FIRST_ENUM ; index < LAST_ENUM; index ++)
 
{
 
      function((uint16_t)index , &array[index]);
 
}

However, some data is corrupted due to this simple change, I thought it might be an optimization problem but I can't solve it by including the (-O) flag. Any advice would be of great help.

Regards

Alan

[CPINA]

Hello Alan,

Great !! I think the SPI was afraid about us 🙂 ! Have a nice day and a lot of fun with STM32.

Best regards,

Christophe

[CPINA]

In order to give better visibility on the answered topics, please click on 'Select as Best' on the reply which solved your issue or answered your question. See also 'Best Answers'

[ABlum.2 · Accepted solution]

Quick update

I have changed all global variables to volatile and now everything works as intended.

Regards!