Move STM32 examples to examples/stm32 subdir.

examples/stm32/obldc/Makefile

@@ -0,0 +1,56 @@
+##
+## This file is part of the libopenstm32 project.
+##
+## Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
+##
+## 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/>.
+##
+
+# Be silent per default, but 'make V=1' will show all compiler calls.
+ifneq ($(V),1)
+Q := @
+# Do not print "Entering directory ...".
+MAKEFLAGS += --no-print-directory
+endif
+
+all: led systick usart can
+
+led:
+	@printf "  BUILD   examples/obldc/led\n"
+	$(Q)$(MAKE) -C led
+
+systick:
+	@printf "  BUILD   examples/obldc/systick\n"
+	$(Q)$(MAKE) -C systick
+
+usart:
+	@printf "  BUILD   examples/obldc/usart\n"
+	$(Q)$(MAKE) -C usart
+
+can:
+	@printf "  BUILD   examples/obldc/can\n"
+	$(Q)$(MAKE) -C can
+
+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
+	@printf "  CLEAN   examples/obldc/can\n"
+	$(Q)$(MAKE) -C can clean
+
+.PHONY: led systick usart can
+

examples/stm32/obldc/can/Makefile

@@ -0,0 +1,23 @@
+##
+## 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 = can
+
+include ../../Makefile.include
+

examples/stm32/obldc/can/can.c

@@ -0,0 +1,216 @@
+/*
+ * This file is part of the libopenstm32 project.
+ *
+ * Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
+ * Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
+ *
+ * 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/flash.h>
+#include <libopenstm32/gpio.h>
+#include <libopenstm32/nvic.h>
+#include <libopenstm32/systick.h>
+#include <libopenstm32/can.h>
+
+struct can_tx_msg {
+	u32 std_id;
+	u32 ext_id;
+	u8 ide;
+	u8 rtr;
+	u8 dlc;
+	u8 data[8];
+};
+
+struct can_rx_msg {
+	u32 std_id;
+	u32 ext_id;
+	u8 ide;
+	u8 rtr;
+	u8 dlc;
+	u8 data[8];
+	u8 fmi;
+};
+
+struct can_tx_msg can_tx_msg;
+struct can_rx_msg can_rx_msg;
+
+void gpio_setup(void)
+{
+	/* Enable GPIOA clock. */
+	rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
+
+	/* Enable GPIOB clock. */
+	rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
+
+	gpio_set(GPIOA, GPIO6);		/* LED0 off */
+	gpio_set(GPIOA, GPIO7);		/* LED1 off */
+	gpio_set(GPIOB, GPIO0);		/* LED2 off */
+	gpio_set(GPIOB, GPIO1);		/* LED3 off */
+
+	/* Set GPIO6/7 (in GPIO port A) to 'output push-pull' for the LEDs. */
+	gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
+	              GPIO_CNF_OUTPUT_PUSHPULL, GPIO6);
+	gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
+	              GPIO_CNF_OUTPUT_PUSHPULL, GPIO7);
+
+	/* Set GPIO6/7 (in GPIO port B) to 'output push-pull' for the LEDs. */
+	gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
+	              GPIO_CNF_OUTPUT_PUSHPULL, GPIO0);
+	gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
+	              GPIO_CNF_OUTPUT_PUSHPULL, GPIO1);
+}
+
+void systick_setup(void)
+{
+	/* 72MHz / 8 => 9000000 counts per second */
+	systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8);
+
+	/* 9000000/9000 = 1000 overflows per second - every 1ms one interrupt */
+	systick_set_reload(9000);
+
+	systick_interrupt_enable();
+
+	/* Start counting. */
+	systick_counter_enable();
+}
+
+void can_setup(void)
+{
+	/* Enable peripheral clocks. */
+	rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN);
+	rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
+	rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_CANEN);
+
+	/* Configure CAN pin: RX (input pull-up). */
+	gpio_set_mode(GPIOA, GPIO_MODE_INPUT,
+		      GPIO_CNF_INPUT_PULL_UPDOWN, GPIO_CAN_RX);
+	gpio_set(GPIOA, GPIO_CAN_RX);
+
+	/* Configure CAN pin: TX. */
+	gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
+		      GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_CAN_TX);
+
+	/* NVIC setup. */
+	nvic_enable_irq(NVIC_USB_LP_CAN_RX0_IRQ);
+	nvic_set_priority(NVIC_USB_LP_CAN_RX0_IRQ, 1);
+
+	/* Reset CAN. */
+	can_reset(CAN1);
+
+	/* CAN cell init. */
+	if (can_init(CAN1,
+		     false,           /* TTCM: Time triggered comm mode? */
+		     true,            /* ABOM: Automatic bus-off management? */
+		     false,           /* AWUM: Automatic wakeup mode? */
+		     false,           /* NART: No automatic retransmission? */
+		     false,           /* RFLM: Receive FIFO locked mode? */
+		     false,           /* TXFP: Transmit FIFO priority? */
+		     CAN_BTR_SJW_1TQ,
+		     CAN_BTR_TS1_3TQ,
+		     CAN_BTR_TS2_4TQ,
+		     12))             /* BRP+1: Baud rate prescaler */
+	{
+		gpio_set(GPIOA, GPIO6);		/* LED0 off */
+		gpio_set(GPIOA, GPIO7);		/* LED1 off */
+		gpio_set(GPIOB, GPIO0);		/* LED2 off */
+		gpio_clear(GPIOB, GPIO1);	/* LED3 on */
+
+		/* Die because we failed to initialize. */
+		while (1)
+			__asm__("nop");
+	}
+
+	/* CAN filter 0 init. */
+	can_filter_id_mask_32bit_init(CAN1,
+				0,     /* Filter ID */
+				0,     /* CAN ID */
+				0,     /* CAN ID mask */
+				0,     /* FIFO assignment (here: FIFO0) */
+				true); /* Enable the filter. */
+
+	/* Enable CAN RX interrupt. */
+	can_enable_irq(CAN1, CAN_IER_FMPIE0);
+}
+
+void sys_tick_handler(void)
+{
+	static int temp32 = 0;
+	static u8 data[8] = {0, 1, 2, 0, 0, 0, 0, 0};
+
+	/* We call this handler every 1ms so 1000ms = 1s on/off. */
+	if (++temp32 != 1000)
+		return;
+
+	temp32 = 0;
+
+	/* Transmit CAN frame. */
+	data[0]++;
+	if (can_transmit(CAN1,
+			 0,     /* (EX/ST)ID: CAN ID */
+			 false, /* IDE: CAN ID extended? */
+			 false, /* RTR: Request transmit? */
+			 8,     /* DLC: Data length */
+			 data) == -1)
+	{
+		gpio_set(GPIOA, GPIO6);		/* LED0 off */
+		gpio_set(GPIOA, GPIO7);		/* LED1 off */
+		gpio_clear(GPIOB, GPIO0);	/* LED2 on */
+		gpio_set(GPIOB, GPIO1);		/* LED3 off */
+	}
+}
+
+void usb_lp_can_rx0_isr(void)
+{
+	u32 id, fmi;
+	bool ext, rtr;
+	u8 length, data[8];
+
+	can_receive(CAN1, 0, false, &id, &ext, &rtr, &fmi, &length, data);
+
+	if (data[0] & 1)
+		gpio_clear(GPIOA, GPIO6);
+	else
+		gpio_set(GPIOA, GPIO6);
+
+	if (data[0] & 2)
+		gpio_clear(GPIOA, GPIO7);
+	else
+		gpio_set(GPIOA, GPIO7);
+
+	if (data[0] & 4)
+		gpio_clear(GPIOB, GPIO0);
+	else
+		gpio_set(GPIOB, GPIO0);
+
+	if (data[0] & 8)
+		gpio_clear(GPIOB, GPIO1);
+	else
+		gpio_set(GPIOB, GPIO1);
+
+	can_fifo_release(CAN1, 0);
+}
+
+int main(void)
+{
+	rcc_clock_setup_in_hse_8mhz_out_72mhz();
+	gpio_setup();
+	can_setup();
+	systick_setup();
+
+	while (1); /* Halt. */
+
+	return 0;
+}

examples/stm32/obldc/can/can.ld

@@ -0,0 +1,31 @@
+/*
+ * This file is part of the libopenstm32 project.
+ *
+ * Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
+ *
+ * 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 an STM32F103RBT6 board (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
+

examples/stm32/obldc/led/Makefile

@@ -0,0 +1,23 @@
+##
+## 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 = led
+
+include ../../Makefile.include
+

examples/stm32/obldc/led/led.c

@@ -0,0 +1,67 @@
+/*
+ * This file is part of the libopenstm32 project.
+ *
+ * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+ * Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
+ *
+ * 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>
+
+/* Set STM32 to 72 MHz. */
+void clock_setup(void)
+{
+	rcc_clock_setup_in_hse_8mhz_out_72mhz();
+
+	/* Enable GPIOA clock. */
+	rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
+
+	/* Enable GPIOB clock. */
+	rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
+}
+
+void gpio_setup(void)
+{
+	/* Set GPIO6 and 7 (in GPIO port A) to 'output push-pull'. */
+	gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
+		      GPIO_CNF_OUTPUT_PUSHPULL, GPIO6 | GPIO7);
+
+	/* Set GPIO0 and 1 (in GPIO port B) to 'output push-pull'. */
+	gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
+		      GPIO_CNF_OUTPUT_PUSHPULL, GPIO0 | GPIO1);
+}
+
+int main(void)
+{
+	int i;
+
+	clock_setup();
+	gpio_setup();
+
+	/* Blink the LEDs on the board. */
+	while (1) {
+		gpio_toggle(GPIOA, GPIO6);	/* LED on/off */
+		for (i = 0; i < 800000; i++);	/* Wait (needs -O0 CFLAGS). */
+		gpio_toggle(GPIOA, GPIO7);	/* LED on/off */
+		for (i = 0; i < 800000; i++);	/* Wait (needs -O0 CFLAGS). */
+		gpio_toggle(GPIOB, GPIO0);	/* LED on/off */
+		for (i = 0; i < 800000; i++);	/* Wait (needs -O0 CFLAGS). */
+		gpio_toggle(GPIOB, GPIO1);	/* LED on/off */
+		for (i = 0; i < 800000; i++);	/* Wait (needs -O0 CFLAGS). */
+	}
+
+	return 0;
+}

examples/stm32/obldc/led/led.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
+

examples/stm32/obldc/systick/Makefile

@@ -0,0 +1,23 @@
+##
+## 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 = systick
+
+include ../../Makefile.include
+

examples/stm32/obldc/systick/systick.c

@@ -0,0 +1,90 @@
+/*
+ * This file is part of the libopenstm32 project.
+ *
+ * Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
+ * Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
+ *
+ * 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/flash.h>
+#include <libopenstm32/gpio.h>
+#include <libopenstm32/nvic.h>
+#include <libopenstm32/systick.h>
+
+u32 temp32;
+
+void gpio_setup(void)
+{
+	/* Enable GPIOA clock. */
+	rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
+
+	/* Enable GPIOB clock. */
+	rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
+
+	gpio_set(GPIOA, GPIO6);		/* LED0 off */
+	gpio_set(GPIOA, GPIO7);		/* LED1 off */
+	gpio_set(GPIOB, GPIO0);		/* LED2 off */
+	gpio_set(GPIOB, GPIO1);		/* LED3 off */
+
+	/* Set GPIO6/7 (in GPIO port A) to 'output push-pull' for the LEDs. */
+	gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
+	              GPIO_CNF_OUTPUT_PUSHPULL, GPIO6);
+	gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
+	              GPIO_CNF_OUTPUT_PUSHPULL, GPIO7);
+	
+	/* Set GPIO6/7 (in GPIO port B) to 'output push-pull' for the LEDs. */
+	gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
+	              GPIO_CNF_OUTPUT_PUSHPULL, GPIO0);
+	gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
+	              GPIO_CNF_OUTPUT_PUSHPULL, GPIO1);
+}
+
+void sys_tick_handler(void)
+{
+	temp32++;
+
+	/* We call this handler every 1ms so 1000ms = 1s on/off. */
+	if (temp32 == 1000) {
+		gpio_toggle(GPIOA, GPIO6); /* LED2 on/off */
+		temp32 = 0;
+	}
+}
+
+int main(void)
+{
+	rcc_clock_setup_in_hse_8mhz_out_72mhz();
+	gpio_setup();
+
+	gpio_clear(GPIOA, GPIO7);	/* LED1 on */
+	gpio_set(GPIOA, GPIO6);		/* LED2 off */
+
+	temp32 = 0;
+
+	/* 72MHz / 8 => 9000000 counts per second */
+	systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8); 
+
+	/* 9000000/9000 = 1000 overflows per second - every 1ms one interrupt */
+	systick_set_reload(9000);
+
+	systick_interrupt_enable();
+
+	/* Start counting. */
+	systick_counter_enable();
+
+	while (1); /* Halt. */
+
+	return 0;
+}

examples/stm32/obldc/systick/systick.ld

@@ -0,0 +1,31 @@
+/*
+ * This file is part of the libopenstm32 project.
+ *
+ * Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
+ *
+ * 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 an STM32F103CBT6 board (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
+

examples/stm32/obldc/usart/Makefile

@@ -0,0 +1,23 @@
+##
+## 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/stm32/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_blocking(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_blocking(USART1, '\r');
+			usart_send_blocking(USART1, '\n');
+		}
+		for (i = 0; i < 80000; i++);	/* Wait (needs -O0 CFLAGS). */
+	}
+
+	return 0;
+}

examples/stm32/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
+

examples/stm32/obldc/usart_irq/Makefile

@@ -0,0 +1,25 @@
+##
+## 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_irq
+
+OOCD_BOARD = open-bldc
+
+include ../../Makefile.include
+

examples/stm32/obldc/usart_irq/usart_irq.c

@@ -0,0 +1,126 @@
+/*
+ * 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>
+#include <libopenstm32/nvic.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)
+{
+
+	/* Enable the USART1 interrupt. */
+	nvic_enable_irq(NVIC_USART1_IRQ);
+
+	/* enable USART1 pin software remapping */
+	AFIO_MAPR |= AFIO_MAPR_USART1_REMAP;
+
+	/* Setup GPIO pin GPIO_USART1_RE_TX 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 GPIO pin GPIO_USART1_RE_RX on GPIO port B for receive. */
+	gpio_set_mode(GPIOB, GPIO_MODE_INPUT,
+		      GPIO_CNF_INPUT_FLOAT, GPIO_USART1_RE_RX);
+
+	/* Setup UART parameters. */
+	usart_set_baudrate(USART1, 230400);
+	usart_set_databits(USART1, 8);
+	usart_set_stopbits(USART1, USART_STOPBITS_1);
+	usart_set_parity(USART1, USART_PARITY_NONE);
+	usart_set_flow_control(USART1, USART_FLOWCONTROL_NONE);
+	usart_set_mode(USART1, USART_MODE_TX_RX);
+
+	/* Enable USART1 Receive interrupt. */
+	USART_CR1(USART1) |= USART_CR1_RXNEIE;
+
+	/* Finally enable the USART. */
+	usart_enable(USART1);
+}
+
+void gpio_setup(void)
+{
+
+	gpio_set(GPIOA, GPIO6 | GPIO7);
+
+	/* Setup GPIO6 and 7 (in GPIO port A) for led use. */
+	gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
+		      GPIO_CNF_OUTPUT_PUSHPULL,
+		      GPIO6 | GPIO7);
+
+}
+
+void usart1_isr(void)
+{
+	static u8 data = 'A';
+
+	/* Check if we were called because of RXNE. */
+	if ((USART_SR(USART1) & USART_SR_RXNE) != 0) {
+
+		/* Indicate that we got data. */
+		gpio_toggle(GPIOA, GPIO6);
+
+		/* Retrieve the data from the peripheral. */
+		data = usart_recv(USART1);
+
+		/* Enable transmit interrupt so it sends back the data. */
+		USART_CR1(USART1) |= USART_CR1_TXEIE;
+	}
+
+	/* Check if we were called because of TXE. */
+	if ((USART_SR(USART1) & USART_SR_TXE) != 0) {
+
+		/* Indicate that we are sending out data. */
+		gpio_toggle(GPIOA, GPIO7);
+
+		/* Put data into the transmit register */
+		usart_send(USART1, data);
+
+		/* Disable the TXE interrupt as we don't need it anymore */
+		USART_CR1(USART1) &= ~USART_CR1_TXEIE;
+	}
+}
+
+int main(void)
+{
+
+	clock_setup();
+	gpio_setup();
+	usart_setup();
+
+	/* Wait forever and do nothing. */
+	while (1) {
+		__asm("nop");
+	}
+
+	return 0;
+}

examples/stm32/obldc/usart_irq/usart_irq.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
+