From 6d9719eaf269fda4b8e6886db78b3c8cc60ed8bb Mon Sep 17 00:00:00 2001
From: asterix <asterix@38d2e660-2303-0410-9eaa-f027e97ec537>
Date: Mon, 26 May 2008 09:08:17 +0000
Subject: [PATCH] Add empty PWM driver implementation for AVR.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@1344 38d2e660-2303-0410-9eaa-f027e97ec537
---
 bertos/cpu/avr/drv/pwm_avr.c | 96 +++++++++++++++++++++++++++++++++---
 bertos/cpu/avr/drv/pwm_avr.h | 40 ++++++++++++---
 2 files changed, 120 insertions(+), 16 deletions(-)

diff --git a/bertos/cpu/avr/drv/pwm_avr.c b/bertos/cpu/avr/drv/pwm_avr.c
index d10988ad..ada71356 100644
--- a/bertos/cpu/avr/drv/pwm_avr.c
+++ b/bertos/cpu/avr/drv/pwm_avr.c
@@ -38,11 +38,91 @@
  *
  */
 
-#include <cpu/detect.h>
-
-#if CPU_AVR
-	#warning TODO:No AVR implementation of PWM.
-/*#elif  Add other AVR families here */
-#else
-	#error Unknown CPU
-#endif
+
+#include "pwm_avr.h"
+#include "hw_cpu.h"
+
+#include "appconfig.h"
+
+#warning TODO:This is an exmple of implementation of PWM low level channel for AVR, implemnt it!
+
+/**
+ * Get preiod from select channel
+ *
+ * \a dev channel
+ */
+pwm_period_t pwm_hw_getPeriod(PwmDev dev)
+{
+	/*
+	 * Put here a code to get period value of select
+	 * PWM channel
+	 */
+
+	return 0
+}
+
+/**
+ * Set pwm waveform frequecy.
+ *
+ * \a freq in Hz
+ */
+void pwm_hw_setFrequency(PwmDev dev, uint32_t freq)
+{
+	/*
+	 * Put here a code to set frequency of select
+	 * PWM channel
+	 */
+
+// 	TRACEMSG("PWM ch[%d] period[%d]", dev, period);
+}
+
+/**
+ * Set pwm duty cycle.
+ *
+ * \a duty value 0 - 2^16
+ */
+void pwm_hw_setDutyUnlock(PwmDev dev, uint16_t duty)
+{
+	/*
+	 * Put here a code to set duty of select
+	 * PWM channel
+	 */
+
+// 	TRACEMSG("PWM ch[%d] duty[%d], period[%ld]", dev, duty, *pwm_map[dev].period_reg);
+}
+
+
+/**
+ * Enable select pwm channel
+ */
+void pwm_hw_enable(PwmDev dev)
+{
+	/*
+	 * Put here a code to enable 
+	 * a select PWM channel
+	 */
+}
+
+/**
+ * Disable select pwm channel
+ */
+void pwm_hw_disable(PwmDev dev)
+{
+	/*
+	 * Put here a code to disable 
+	 * a select PWM channel
+	 */
+}
+
+
+/**
+ * Init pwm.
+ */
+void pwm_hw_init(void)
+{
+	/*
+	 * Put here a code to init 
+	 * a PWM hawdware
+	 */
+}
+
diff --git a/bertos/cpu/avr/drv/pwm_avr.h b/bertos/cpu/avr/drv/pwm_avr.h
index 81aeb0ab..022cfba7 100644
--- a/bertos/cpu/avr/drv/pwm_avr.h
+++ b/bertos/cpu/avr/drv/pwm_avr.h
@@ -38,11 +38,35 @@
  *
  */
 
-#include <cpu/detect.h>
-
-#if CPU_AVR
-	#warning TODO:No AVR implementation of PWM.
-/*#elif  Add other AVR families here */
-#else
-	#error Unknown CPU
-#endif
+#ifndef DRV_PWM_AVR_H
+#define DRV_PWM_AVR_H
+
+#include "pwm_map.h"
+
+#include "appconfig.h"
+
+#define PWM_HW_MAX_PRESCALER_STEP         10
+#define PWM_HW_MAX_PERIOD             0xFFFF
+
+/**
+ * Type definition for pwm period.
+ */
+typedef uint16_t pwm_period_t;
+
+/**
+ * Structur definition for pwm driver.
+ */
+typedef struct PwmChannel
+{
+	/*  */
+} PwmChannel;
+
+
+void pwm_hw_init(void);
+void pwm_hw_setFrequency(PwmDev dev, uint32_t freq);
+void pwm_hw_setDutyUnlock(PwmDev dev, uint16_t duty);
+void pwm_hw_disable(PwmDev dev);
+void pwm_hw_enable(PwmDev dev);
+pwm_period_t pwm_hw_getPeriod(PwmDev dev);
+
+#endif /* DRV_ADC_AT91_H */
-- 
2.25.1