altos: Another missing usbtrng file

diff --git a/src/usbtrng/ao_usbtrng.c b/src/usbtrng/ao_usbtrng.c
new file mode 100644 (file)
index 0000000..6b4d20f
--- /dev/null
+++ b/src/usbtrng/ao_usbtrng.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright © 2014 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include <ao.h>
+
+#define AO_TRNG_SPI_BUS                1
+#define AO_TRNG_SPI_SPEED      AO_SPI_SPEED_250kHz
+
+static void
+ao_trng_test(void)
+{
+       static uint8_t  random[32];
+       uint8_t         i;
+
+       ao_spi_get(AO_TRNG_SPI_BUS, AO_TRNG_SPI_SPEED);
+       ao_spi_recv(random, sizeof (random), AO_TRNG_SPI_BUS);
+       ao_spi_put(AO_TRNG_SPI_BUS);
+       for (i = 0; i < sizeof (random); i++)
+               printf (" %02x", random[i]);
+       printf ("\n");
+}
+
+static const struct ao_cmds ao_trng_cmds[] = {
+       { ao_trng_test, "R\0Dump some random numbers" },
+       { 0, NULL }
+};
+
+void
+main(void)
+{
+       ao_clock_init();
+       ao_task_init();
+       ao_timer_init();
+
+       ao_spi_init();
+       ao_usb_init();
+
+       ao_serial_init();
+
+       ao_led_init(LEDS_AVAILABLE);
+
+       ao_led_on(AO_LED_GREEN);
+
+       ao_cmd_init();
+
+       ao_cmd_register(ao_trng_cmds);
+
+       ao_start_scheduler();
+}