aboutsummaryrefslogtreecommitdiff
path: root/examples
diff options
context:
space:
mode:
authorPiotr Esden-Tempski2010-12-21 20:55:04 +0100
committerPiotr Esden-Tempski2010-12-21 20:55:04 +0100
commit77fbe48a5efa0812e6acb72a70e6d94e282173a7 (patch)
treebcdad4e2b705febc4de88fca66d8e8c4b459323a /examples
parent45e57fa51e3807073bc484e703e9c1ace900cd9a (diff)
Added usart test version for obldc.
Diffstat (limited to 'examples')
-rw-r--r--examples/obldc/Makefile10
-rw-r--r--examples/obldc/usart/Makefile22
-rw-r--r--examples/obldc/usart/usart.c91
-rw-r--r--examples/obldc/usart/usart.ld31
4 files changed, 152 insertions, 2 deletions
diff --git a/examples/obldc/Makefile b/examples/obldc/Makefile
index 991178c..88182d5 100644
--- a/examples/obldc/Makefile
+++ b/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
diff --git a/examples/obldc/usart/Makefile b/examples/obldc/usart/Makefile
new file mode 100644
index 0000000..6484117
--- /dev/null
+++ b/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
diff --git a/examples/obldc/usart/usart.c b/examples/obldc/usart/usart.c
new file mode 100644
index 0000000..ac0becb
--- /dev/null
+++ b/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;
+}
diff --git a/examples/obldc/usart/usart.ld b/examples/obldc/usart/usart.ld
new file mode 100644
index 0000000..c8683d5
--- /dev/null
+++ b/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
+