Added usart test version for obldc.

examples/obldc/Makefile

@@ -24,7 +24,7 @@ Q := @
 MAKEFLAGS += --no-print-directory
 endif
 
-all: led systick
+all: led systick usart
 
 led:
 	@printf "  BUILD   examples/obldc/led\n"
@@ -34,11 +34,17 @@ systick:
 	@printf "  BUILD   examples/obldc/systick\n"
 	$(Q)$(MAKE) -C systick
 
+usart:
+	@printf "  BUILD   examples/obldc/usart\n"
+	$(Q)$(MAKE) -C usart
+
 clean:
 	@printf "  CLEAN   examples/obldc/led\n"
 	$(Q)$(MAKE) -C led clean
 	@printf "  CLEAN   examples/obldc/systick\n"
 	$(Q)$(MAKE) -C systick clean
+	@printf "  CLEAN   examples/obldc/usart\n"
+	$(Q)$(MAKE) -C usart clean
 
-.PHONY: led systick
+.PHONY: led systick usart
 

examples/obldc/usart/Makefile

@@ -0,0 +1,22 @@
+##
+## This file is part of the libopenstm32 project.
+##
+## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+##
+## 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 3 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.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program.  If not, see <http://www.gnu.org/licenses/>.
+##
+
+BINARY		= usart
+
+include ../../Makefile.include

examples/obldc/usart/usart.c

@@ -0,0 +1,91 @@
+/*
+ * This file is part of the libopenstm32 project.
+ *
+ * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * 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 3 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libopenstm32/rcc.h>
+#include <libopenstm32/gpio.h>
+#include <libopenstm32/usart.h>
+
+void clock_setup(void)
+{
+	rcc_clock_setup_in_hse_8mhz_out_72mhz();
+
+	/* Enable GPIOA clock. For LED gpio's */
+	rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
+
+	/* Enable clocks for GPIO port B (for GPIO_USART1_TX) and USART1. */
+	rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
+	rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN);
+	rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_USART1EN);
+}
+
+void usart_setup(void)
+{
+
+	/* Setup GPIO6 (in GPIO port A) to 'output push-pull' for led use. */
+	gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
+		      GPIO_CNF_OUTPUT_PUSHPULL,
+		      GPIO6);
+
+	AFIO_MAPR |= AFIO_MAPR_USART1_REMAP;
+
+	/* Setup GPIO pin GPIO_USART3_TX/GPIO10 on GPIO port B for transmit. */
+	gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
+                      GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART1_RE_TX);
+
+	/* Setup UART parameters. */
+	usart_set_baudrate(USART1, 230400);
+	usart_set_databits(USART1, 8);
+	usart_set_stopbits(USART1, USART_STOPBITS_1);
+	usart_set_mode(USART1, USART_MODE_TX);
+	usart_set_parity(USART1, USART_PARITY_NONE);
+	usart_set_flow_control(USART1, USART_FLOWCONTROL_NONE);
+
+	/* Finally enable the USART. */
+	usart_enable(USART1);
+}
+
+void gpio_setup(void)
+{
+	/* Set GPIO12 (in GPIO port C) to 'output push-pull'. */
+	gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
+		      GPIO_CNF_OUTPUT_PUSHPULL, GPIO6);
+}
+
+int main(void)
+{
+	int i, j = 0, c = 0;
+
+	clock_setup();
+	gpio_setup();
+	usart_setup();
+
+	/* Blink the LED (PC12) on the board with every transmitted byte. */
+	while (1) {
+		gpio_toggle(GPIOA, GPIO6);	/* LED on/off */
+		usart_send(USART1, c + '0');	/* Send one byte on USART3. */
+		c = (c == 9) ? 0 : c + 1;	/* Increment c. */
+		if ((j++ % 80) == 0) {		/* Newline after line full. */
+			usart_send(USART1, '\r');
+			usart_send(USART1, '\n');
+		}
+		for (i = 0; i < 80000; i++);	/* Wait (needs -O0 CFLAGS). */
+	}
+
+	return 0;
+}

examples/obldc/usart/usart.ld

@@ -0,0 +1,31 @@
+/*
+ * This file is part of the libopenstm32 project.
+ *
+ * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * 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 3 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Linker script for Open-BLDC (STM32F103CBT6, 128K flash, 20K RAM). */
+
+/* Define memory regions. */
+MEMORY
+{
+	rom (rx) : ORIGIN = 0x08000000, LENGTH = 128K
+	ram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
+}
+
+/* Include the common ld script from libopenstm32. */
+INCLUDE libopenstm32.ld
+