wip

source/firmware/kernel/driver/include/pwm.h

@@ -0,0 +1,35 @@
+/*
+ * pwm.h
+ *
+ *  Created on: Aug 9, 2016
+ *      Author: tkl
+ */
+
+#ifndef SOURCE_FIRMWARE_KERNEL_DRIVER_INCLUDE_PWM_H_
+#define SOURCE_FIRMWARE_KERNEL_DRIVER_INCLUDE_PWM_H_
+
+//! \brief Function pointer to the open function.
+typedef int (*pwm_fp_open_t)(const void*);
+
+//! \brief Function pointer to the close function.
+typedef int (*pwm_fp_close_t)(const void*);
+
+//! \brief Function pointer to the read function.
+typedef int (*pwm_fp_set_duty_cycle_t)(const void*, unsigned int duty_cycle_percent);
+
+struct pwm_fp {
+	const pwm_fp_open_t open;
+	const pwm_fp_close_t close;
+	const pwm_fp_set_duty_cycle_t set_duty_cycle;
+};
+
+struct pwm {
+	const void *arch_dep_device;	//!< Architecture depended pwm device (i.e. stm32f10x_pwm_t).
+	const struct pwm_fp *fp;				//!< Function pointer for the pwm driver access.
+};
+
+int pwm_open(const struct pwm *device);
+int pwm_close(const struct pwm *device);
+int pwm_set_duty_cycle(const struct pwm *device, unsigned int duty_cycle_percent);
+
+#endif /* SOURCE_FIRMWARE_KERNEL_DRIVER_INCLUDE_PWM_H_ */

source/firmware/kernel/driver/pwm.c

@@ -0,0 +1,33 @@
+/*
+ * pwm.c
+ *
+ *  Created on: Aug 9, 2016
+ *      Author: tkl
+ */
+
+#include <stddef.h>
+#include <pwm.h>
+
+int pwm_open(const struct pwm *device)
+{
+	if(NULL == device)
+		return -1;
+	pwm_fp_open_t open = device->fp->open;
+	return open(device->arch_dep_device);
+}
+
+int pwm_close(const struct pwm *device)
+{
+	if(NULL == device)
+		return -1;
+	pwm_fp_close_t close = device->fp->close;
+	return close(device->arch_dep_device);
+}
+
+int pwm_set_duty_cycle(const struct pwm *device, unsigned int duty_cycle_percent)
+{
+	if(NULL == device)
+		return -1;
+	pwm_fp_set_duty_cycle_t set = device->fp->set_duty_cycle;
+	return set(device->arch_dep_device, duty_cycle_percent);
+}