Add empty PWM driver implementation for AVR.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@1344 38d2e660-2303-0410-9eaa-f027e97ec537

diff --git a/bertos/cpu/avr/drv/pwm_avr.c b/bertos/cpu/avr/drv/pwm_avr.c
index d10988adee010a388c2fccf7e6bbe6b28abb957b..ada713565e5afc0f3e31a74b62e92f6ad871f5bb 100644 (file)
--- 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 81aeb0ab1d93c3cb9c46365bc45fa4b44e14e95c..022cfba770e90a91c56983cbd5d97f2713c9444d 100644 (file)
--- 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 */