+
+#define AO_DMA_TEST_INDEX STM_DMA_INDEX(4)
+
+static void
+ao_dma_test(void) {
+ static char src[20] = "hello, world";
+ static char dst[20];
+
+ dst[0] = '\0';
+ ao_dma_set_transfer(AO_DMA_TEST_INDEX, dst, src, 13,
+ (1 << STM_DMA_CCR_MEM2MEM) |
+ (STM_DMA_CCR_PL_LOW << STM_DMA_CCR_PL) |
+ (STM_DMA_CCR_MSIZE_8 << STM_DMA_CCR_MSIZE) |
+ (STM_DMA_CCR_PSIZE_8 << STM_DMA_CCR_PSIZE) |
+ (1 << STM_DMA_CCR_MINC) |
+ (1 << STM_DMA_CCR_PINC) |
+ (0 << STM_DMA_CCR_CIRC) |
+ (STM_DMA_CCR_DIR_MEM_TO_PER << STM_DMA_CCR_DIR));
+ ao_dma_start(AO_DMA_TEST_INDEX);
+ ao_arch_critical(
+ while (!ao_dma_done[AO_DMA_TEST_INDEX])
+ ao_sleep(&ao_dma_done[AO_DMA_TEST_INDEX]);
+ );
+ ao_dma_done_transfer(AO_DMA_TEST_INDEX);
+ printf ("copied %s\n", dst);
+}
+
+static void
+ao_spi_write(void) {
+ unsigned char data[] = { 0x55, 0xaa, 0xff, 0x00 };
+ int i;
+
+ for (i = 0; i < 10; i++) {
+ ao_spi_get(0, AO_SPI_SPEED_FAST);
+ stm_gpio_set(&stm_gpioc, 12, 0);
+ ao_spi_send(data, 4, 0);
+ stm_gpio_set(&stm_gpioc, 12, 1);
+ ao_spi_put(0);
+ printf(".");
+ flush();
+ ao_delay(100);
+ }
+}
+
+static void
+ao_spi_read(void) {
+ unsigned char data[4];
+ int i;
+
+ for (i = 0; i < 10; i++) {
+ ao_spi_get(0, AO_SPI_SPEED_FAST);
+ stm_gpio_set(&stm_gpioc, 12, 0);
+ ao_spi_recv(data, 4, 0);
+ stm_gpio_set(&stm_gpioc, 12, 1);
+ ao_spi_put(0);
+ printf(".");
+ flush();
+ ao_delay(100);
+ }
+}
+
+static void
+ao_i2c_write(void) {
+ unsigned char data[] = { 0x55, 0xaa, 0xff, 0x00 };
+ int i;
+
+ for (i = 0; i < 10; i++) {
+ ao_i2c_get(0);
+ if (ao_i2c_start(0, 0x55))
+ ao_i2c_send(data, 4, 0, TRUE);
+ else {
+ printf ("i2c start failed\n");
+ ao_i2c_put(0);
+ break;
+ }
+ ao_i2c_put(0);
+ printf(".");
+ flush();
+ ao_delay(100);
+ }
+}
+
+static void
+ao_temp (void)
+{
+ struct ao_data packet;
+ int temp;
+
+ ao_data_get(&packet);
+
+ /*
+ * r = (110 - 25) / (ts_cal_hot - ts_cal_cold)
+ * 25 + (110 - 25) * (temp - ts_cal_cold) / (ts_cal_hot - ts_cal_cold)
+ */
+ temp = 25 + (110 - 25) * (packet.adc.temp - stm_temp_cal.ts_cal_cold) / (stm_temp_cal.ts_cal_hot - stm_temp_cal.ts_cal_cold);
+ printf ("temp: %d\n", temp);
+}
+
+#if 0
+static void
+ao_event(void)
+{
+ struct ao_event event;
+
+ for (;;) {
+ flush();
+ ao_event_get(&event);
+ printf ("type %1d unit %1d tick %5u value %ld\n",
+ event.type, event.unit, event.tick, event.value);
+ if (event.value == 100)
+ break;
+ }
+
+}
+#endif
+
+__code struct ao_cmds ao_demo_cmds[] = {
+ { ao_dma_test, "D\0DMA test" },
+ { ao_spi_write, "W\0SPI write" },
+ { ao_spi_read, "R\0SPI read" },
+ { ao_i2c_write, "i\0I2C write" },
+ { ao_temp, "t\0Show temp" },
+/* { ao_event, "e\0Monitor event queue" }, */
+ { 0, NULL }
+};
+