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lib: os: hex: correct explicit cast type

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change explicit type cast of essential character type, complying with
required [misra-c2012-10.2] rule which states; Expressions of
essentially character type shall not be used inappropriately in addition
and subtraction operations.

Found as a coding guideline violation (Rule 10.2) by static code
scanning tool.

Note: Tested on STM32L5 Nucleo-144 board (stm32l552xx).

Signed-off-by: ferar alashkar <ferar.alashkar@gmail.com>
This commit is contained in:
ferar alashkar 2023-06-17 17:16:08 -04:00 committed by Carles Cufí
parent bba6a1d69e
commit dddc034923
1 changed files with 2 additions and 2 deletions
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4
lib/os/hex.c
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@ -27,9 +27,9 @@ int char2hex(char c, uint8_t *x)
int hex2char(uint8_t x, char *c)
{
if (x <= 9) {
*c = x + '0';
*c = x + (char)'0';
} else if (x <= 15) {
*c = x - 10 + 'a';
*c = x - 10 + (char)'a';
} else {
return -EINVAL;
}