Merge branch 'master'

[fw/altos] / src / snekboard / snekboard.c

diff --git a/src/snekboard/snekboard.c b/src/snekboard/snekboard.c
new file mode 100644 (file)
index 0000000..719ea01
--- /dev/null
+++ b/src/snekboard/snekboard.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright © 2016 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, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ */
+
+#include <ao.h>
+#include <ao_led.h>
+#include <ao_dma_samd21.h>
+
+#define SNEK_CS_PORT   (&samd21_port_a)
+#define SNEK_CS_PIN    (11)
+#define SNEK_SPI_INDEX AO_SPI_0_PA08_PA09_PA10
+#define SNEK_SPI_SPEED ao_spi_speed(1000000)
+
+static const uint8_t spi_test[] = {
+       0x55,
+};
+
+static void
+ao_spi_test(void)
+{
+       ao_spi_get_bit(SNEK_CS_PORT, SNEK_CS_PIN, SNEK_SPI_INDEX, SNEK_SPI_SPEED);
+       ao_spi_send(spi_test, sizeof(spi_test), SNEK_SPI_INDEX);
+       ao_spi_put_bit(SNEK_CS_PORT, SNEK_CS_PIN, SNEK_SPI_INDEX);
+}
+
+const struct ao_cmds ao_spi_cmds[] = {
+       { ao_spi_test,  "s \0Send some bytes over spi" },
+       { 0, NULL },
+};
+
+int main(void)
+{
+       ao_led_init();
+       ao_clock_init();
+       ao_task_init();
+       ao_timer_init();
+       ao_dma_init();
+       ao_spi_init();
+       ao_usb_init();
+       ao_cmd_register(ao_spi_cmds);
+       ao_spi_init_cs(&samd21_port_a, 1 << 11); /* analog 8 for CS */
+       ao_cmd_init();
+       ao_start_scheduler();
+       return 0;
+}