2 * Copyright © 2014 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
20 #define AO_TRNG_SPI_BUS 1
21 #define AO_TRNG_SPI_SPEED AO_SPI_SPEED_250kHz
26 static uint8_t random[32];
29 ao_spi_get(AO_TRNG_SPI_BUS, AO_TRNG_SPI_SPEED);
30 ao_spi_recv(random, sizeof (random), AO_TRNG_SPI_BUS);
31 ao_spi_put(AO_TRNG_SPI_BUS);
32 for (i = 0; i < sizeof (random); i++)
33 printf (" %02x", random[i]);
37 static const struct ao_cmds ao_trng_cmds[] = {
38 { ao_trng_test, "R\0Dump some random numbers" },
54 ao_led_init(LEDS_AVAILABLE);
56 ao_led_on(AO_LED_GREEN);
60 ao_cmd_register(ao_trng_cmds);