Pass reset config; Cleanup

Author: bukinr

Makefile

@@ -16,4 +16,7 @@ all:
 clean:
 	@rm -rf obj/*
 
+flash:
+	sudo openocd -f interface/stlink.cfg -f target/stm32g0x.cfg -c 'reset_config srst_only connect_assert_srst; program obj/${APP}.bin reset 0x08000000 exit'
+
 include ${OSDIR}/mk/user.mk

src/board.c

@@ -85,9 +85,14 @@ uart_putchar(int c, void *arg)
 static const struct gpio_pin uart_pins[] = {
 	{ PORT_A, 2, MODE_ALT, 1, FLOAT }, /* USART2_TX */
 	{ PORT_A, 3, MODE_ALT, 1, FLOAT }, /* USART2_RX */
+	{ PORT_A, 0, MODE_OUT, 0, FLOAT }, /* VCC_1v8 */
+	{ PORT_A, 1, MODE_OUT, 0, FLOAT }, /* VCC_0v9 */
+	{ PORT_A, 12, MODE_OUT, 0, FLOAT }, /* RESET */
 	{ PORT_B, 0, MODE_OUT, 0, FLOAT }, /* VCC_3v3 */
+#if 0
 	{ PORT_B, 6, MODE_ALT, 0, FLOAT }, /* USART1_TX */
 	{ PORT_B, 7, MODE_ALT, 0, FLOAT }, /* USART1_RX */
+#endif
 	{ -1, -1, -1, -1, -1 }
 };
 

src/main.c

@@ -10,16 +10,26 @@ extern struct stm32f4_gpio_softc gpio_sc;
 int
 main(void)
 {
-	int flag;
 
-	flag = 0;
+	/* Disable power. */
+	pin_set(&gpio_sc, PORT_B, 0, 0); /* VCC_3v3 */
+	pin_set(&gpio_sc, PORT_A, 0, 0); /* VCC_1v8 */
+	pin_set(&gpio_sc, PORT_A, 1, 0); /* VCC_0v9 */
+	pin_set(&gpio_sc, PORT_A, 12, 0); /* RESET */
 
-	while (1) {
-		printf("%s: hello world\n", __func__);
+	mdx_usleep(100000);
+
+	/* Enable power. */
+	pin_set(&gpio_sc, PORT_B, 0, 1); /* VCC_3v3 */
+	pin_set(&gpio_sc, PORT_A, 0, 1); /* VCC_1v8 */
+	mdx_usleep(2000);
+	pin_set(&gpio_sc, PORT_A, 1, 1); /* VCC_0v9 */
+	mdx_usleep(64000);
+	pin_set(&gpio_sc, PORT_A, 12, 1); /* RESET */
+
+	/* Sleep forever. */
+	while (1)
 		mdx_usleep(500000);
-		flag = flag ? 0 : 1;
-		pin_set(&gpio_sc, PORT_B, 0, flag);
-	}
 
 	return (0);
 }