circuitpython/tests/micropython/viper_ptr16_store.py

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# test ptr16 type
@micropython.viper
def set(dest:ptr16, val:int):
dest[0] = val
@micropython.viper
def set1(dest:ptr16, val:int):
dest[1] = val
@micropython.viper
def memset(dest:ptr16, val:int, n:int):
for i in range(n):
dest[i] = val
@micropython.viper
def memset2(dest_in, val:int):
dest = ptr16(dest_in)
n = int(len(dest_in)) >> 1
for i in range(n):
dest[i] = val
b = bytearray(4)
print(b)
set(b, 0x4242)
print(b)
set1(b, 0x4343)
print(b)
memset(b, 0x4444, len(b) // 2)
print(b)
memset2(b, 0x4545)
print(b)