Check if array is ASCII

How do I check in C if an array of uint8 contains only ASCII elements? If possible please refer me to the condition that checks if an element is ASCII or not

Your array elements are uint8, so must be in the range 0-255

For standard ASCII character set, bytes 0-127 are used, so you can use a for loop to iterate through the array, checking if each element is <= 127.

If you're treating the array as a string, be aware of the 0 byte (null character), which marks the end of the string

From your example comment, this could be implemented like this:

int checkAscii (uint8 *array) {
    for (int i=0; i<LEN; i++) {
        if (array[i] > 127) return 0;
    }
    return 1;
}

It breaks out early at the first element greater than 127.