| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| #include "sysinit/sysinit.h" |
| #include "os/os.h" |
| #include "console/console.h" |
| #include "trng/trng.h" |
| |
| static uint8_t buf[128]; |
| |
| static void |
| print_buffer(void *ptr, size_t size) |
| { |
| while (size) { |
| console_printf("%02x", *((uint8_t *) ptr)); |
| |
| size--; |
| ptr++; |
| } |
| |
| console_printf("\n"); |
| } |
| |
| int |
| main(void) |
| { |
| struct trng_dev *trng; |
| |
| sysinit(); |
| |
| trng = (struct trng_dev *) os_dev_open(MYNEWT_VAL(APP_TRNG_DEV), |
| OS_TIMEOUT_NEVER, NULL); |
| assert(trng); |
| |
| os_time_delay(OS_TICKS_PER_SEC); |
| |
| trng_read(trng, buf, sizeof(buf)); |
| console_printf("%d bytes from os_dev:\n", sizeof(buf)); |
| print_buffer(buf, sizeof(buf)); |
| |
| while (1) { |
| console_printf("os_dev -> %08x\n", (unsigned) trng_get_u32(trng)); |
| |
| os_time_delay(OS_TICKS_PER_SEC / 4); |
| } |
| |
| return 0; |
| } |