basic uart: f4 and f3, prepping tests for usart-v2

use parity to at least test a little more of the common code

1 files changed, 63 insertions, 0 deletions

diff --git a/tests/uart-basic/main-stm32f4-disco.c b/tests/uart-basic/main-stm32f4-disco.c
new file mode 100644
index 0000000..86d9b4a
--- /dev/null
+++ b/tests/uart-basic/main-stm32f4-disco.c
@@ -0,0 +1,63 @@
+/*
+ * Oct 2017 Karl Palsson <karlp@tweak.net.au>
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <libopencm3/cm3/nvic.h>
+#include <libopencm3/stm32/gpio.h>
+#include <libopencm3/stm32/rcc.h>
+#include <libopencm3/stm32/usart.h>
+
+#include "uart-basic.h"
+
+#define LED_DISCO_GREEN_PORT GPIOD
+#define LED_DISCO_GREEN_PIN GPIO12
+
+void usart2_isr(void)
+{
+	ub_irq_handler();	
+}
+
+static void board_init(void) {
+	rcc_periph_clock_enable(RCC_GPIOA);
+        gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO2|GPIO3);
+	/* usart is AF7 */
+        gpio_set_af(GPIOA, GPIO_AF7, GPIO2|GPIO3);
+}
+
+int main(void)
+{
+	int i;
+	int j = 0;
+	rcc_clock_setup_hse_3v3(&rcc_hse_8mhz_3v3[RCC_CLOCK_3V3_168MHZ]);
+	rcc_periph_clock_enable(RCC_GPIOD);
+	board_init();
+	struct ub_hw ub = {
+		.uart = USART2,
+		.uart_nvic = NVIC_USART2_IRQ,
+		.uart_rcc = RCC_USART2,
+	};
+	ub_init(&ub);
+	printf("hi guys!\n");
+	/* green led for ticking */
+	gpio_mode_setup(LED_DISCO_GREEN_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE,
+			LED_DISCO_GREEN_PIN);
+
+
+	while (1) {
+		gpio_toggle(LED_DISCO_GREEN_PORT, LED_DISCO_GREEN_PIN);
+
+		for (i = 0; i < 0x800000; i++) { /* Wait a bit. */
+			__asm__("NOP");
+		}
+		ub_task();
+		gpio_toggle(LED_DISCO_GREEN_PORT, LED_DISCO_GREEN_PIN);
+		for (i = 0; i < 0x800000; i++) { /* Wait a bit. */
+			__asm__("NOP");
+		}
+	}
+
+	return 0;
+}