circuitpython/tests/micropython/viper_ptr8_store.py

# test ptr8 type

@micropython.viper
def set(dest:ptr8, val:int):
    dest[0] = val

@micropython.viper
def set1(dest:ptr8, val:int):
    dest[1] = val

@micropython.viper
def memset(dest:ptr8, val:int, n:int):
    for i in range(n):
        dest[i] = val

@micropython.viper
def memset2(dest_in, val:int):
    dest = ptr8(dest_in)
    n = int(len(dest_in))
    for i in range(n):
        dest[i] = val

b = bytearray(4)
print(b)

set(b, 41)
print(b)

set1(b, 42)
print(b)

memset(b, 43, len(b))
print(b)

memset2(b, 44)
print(b)