Task (thread) example with the stm32f429 board

Author: ThomasPietrzak

examples/stm32f429discovery/task/Makefile

@@ -0,0 +1,58 @@
+export BOARD = stm32f429discovery
+ROOTDIR = $(CURDIR)/uC-sdk
+
+ifeq ($(wildcard $(ROOTDIR)/uC-sdk.root),)
+ifneq ($(wildcard ../../../uC-sdk.root),)
+ROOTDIR = ../../..
+endif
+endif
+
+TARGET = task.bin
+TARGET_SRCS = task.c
+
+LIBDEPS = \
+$(ROOTDIR)/FreeRTOS/libFreeRTOS.a \
+$(ROOTDIR)/arch/libarch.a \
+$(ROOTDIR)/os/libos.a \
+$(ROOTDIR)/libc/libc.a \
+$(ROOTDIR)/libm/libm.a \
+$(ROOTDIR)/acorn/libacorn.a \
+$(ROOTDIR)/hardware/libhardware.a \
+
+LIBS = -Wl,--start-group $(LIBDEPS) -Wl,--end-group
+TARGET_INCLUDES = include
+
+include $(ROOTDIR)/common.mk
+
+all: uC-sdk $(TARGET)
+
+clean: clean-generic
+	$(Q)$(MAKE) $(MAKE_OPTS) -C $(ROOTDIR) clean
+
+.PHONY: uC-sdk
+
+$(ROOTDIR)/FreeRTOS/libFreeRTOS.a: uC-sdk
+$(ROOTDIR)/arch/libarch.a: uC-sdk
+$(ROOTDIR)/os/libos.a: uC-sdk
+$(ROOTDIR)/libc/libc.a: uC-sdk
+$(ROOTDIR)/libm/libm.a: uC-sdk
+$(ROOTDIR)/acorn/libacorn.a: uC-sdk
+$(ROOTDIR)/hardware/libhardware.a: uC-sdk
+
+uC-sdk:
+	$(E) "[MAKE]   Entering uC-sdk"
+	$(Q)$(MAKE) $(MAKE_OPTS) -C $(ROOTDIR)
+
+deps: ldeps
+	$(E) "[DEPS]   Creating dependency tree for uC-sdk"
+	$(Q)$(MAKE) $(MAKE_OPTS) -C $(ROOTDIR) ldeps
+
+include $(ROOTDIR)/FreeRTOS/config.mk
+include $(ROOTDIR)/arch/config.mk
+include $(ROOTDIR)/os/config.mk
+include $(ROOTDIR)/libc/config.mk
+include $(ROOTDIR)/libm/config.mk
+include $(ROOTDIR)/acorn/config.mk
+include $(ROOTDIR)/hardware/config.mk
+include $(ROOTDIR)/target-rules.mk
+

examples/stm32f429discovery/task/task.c

@@ -0,0 +1,38 @@
+#include <gpio.h>
+#include <malloc.h>
+#include <FreeRTOS.h>
+#include <task.h>
+
+void callback(void *parameter) {
+    uint8_t status = 0;
+    //Cast the parameter back to its origin type
+    pin_t *pin = (pin_t *)parameter;
+    while(1) {
+        status ^= 1;
+        gpio_set(*pin, status);
+        vTaskDelay(1000);
+    }
+}
+
+int main() {
+    //Initialize the pin_t structure with the pin port and number
+    //On this board there is a LED on PG13
+    pin_t *pin = malloc(sizeof(pin_t));
+    *pin = make_pin(gpio_port_g, 13);
+
+    //configure the pin for output.
+    gpio_config(*pin, pin_dir_write, pull_down);
+
+    //Create the task
+    xTaskCreate(callback,           //callback function
+        (const signed char *)NULL,  //task name
+        configMINIMAL_STACK_SIZE,   //stack size
+        (void *)pin,               //parameter (cast it to void *)
+        tskIDLE_PRIORITY,
+        NULL);
+
+    //Run the tasks
+    vTaskStartScheduler();
+
+    return 0;
+}