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add led pwm

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optixx 2009-09-20 11:25:43 +02:00 committed by Jannis (jix) Harder
parent b9425b1da5
commit 415b79751d
5 changed files with 139 additions and 2 deletions
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4
avr/usbload/Makefile
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@ -33,13 +33,13 @@ ifeq ($(DEBUG),1)
OBJECTS = usbdrv/usbdrv.o usbdrv/usbdrvasm.o usbdrv/oddebug.o \
main.o usb_bulk.o uart.o fifo.o sram.o crc.o debug.o \
dump.o timer.o watchdog.o rle.c loader.o info.o shared_memory.o \
irq.o command.o testing.o
pwm.o irq.o command.o testing.o
else
LDFLAGS =-Wl,-u
CFLAGS =-Iusbdrv -I. -DDEBUG_LEVEL=0 -DNO_DEBUG -DNO_INFO
OBJECTS = usbdrv/usbdrv.o usbdrv/usbdrvasm.o usbdrv/oddebug.o main.o usb_bulk.o \
uart.o fifo.o sram.o crc.o debug.o dump.o timer.o watchdog.o rle.c loader.o \
info.o shared_memory.o command.o irq.o
pwm.o info.o shared_memory.o command.o irq.o
endif
COMPILE = avr-gcc -Wall -Os -DF_CPU=$(F_CPU) $(CFLAGS) -mmcu=$(DEVICE)

5
avr/usbload/main.c
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@ -45,6 +45,7 @@
#include "command.h"
#include "shared_memory.h"
#include "irq.h"
#include "pwm.h"
#include "testing.h"
@ -199,6 +200,8 @@ usbMsgLen_t usbFunctionSetup(uchar data[8])
req_state = REQ_STATUS_SNES;
debug_P(DEBUG_USB, PSTR("USB_MODE_SNES:\n"));
ret_len = 0;
pwm_stop();
/*
* -------------------------------------------------------------------------
*/
@ -332,6 +335,7 @@ int main(void)
banner();
system_init();
//pwm_init();
shared_memory_init();
snes_reset_hi();
snes_reset_off();
@ -339,6 +343,7 @@ int main(void)
boot_startup_rom(500);
globals_init();
usbInit();
usb_connect();

93
avr/usbload/pwm.c Normal file
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@ -0,0 +1,93 @@
/*
* =====================================================================================
*
* ________ .__ __ ________ ____ ________
* \_____ \ __ __|__| ____ | | __\______ \ _______ _/_ |/ _____/
* / / \ \| | \ |/ ___\| |/ / | | \_/ __ \ \/ /| / __ \
* / \_/. \ | / \ \___| < | ` \ ___/\ / | \ |__\ \
* \_____\ \_/____/|__|\___ >__|_ \/_______ /\___ >\_/ |___|\_____ /
* \__> \/ \/ \/ \/ \/
*
* www.optixx.org
*
*
* Version: 1.0
* Created: 07/21/2009 03:32:16 PM
* Author: david@optixx.org
*
* =====================================================================================
*/
#include <stdint.h>
#include <string.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include "pwm.h"
#include "debug.h"
#include "info.h"
#include "sram.h"
#define PWM_SINE_MAX 255
uint8_t pwm_sine_table[] = {
0x7f,0x82,0x85,0x88,0x8b,0x8e,0x91,0x94,0x97,0x9b,0x9e,0xa1,0xa4,0xa7,0xaa,0xad,
0xaf,0xb2,0xb5,0xb8,0xbb,0xbe,0xc0,0xc3,0xc6,0xc8,0xcb,0xcd,0xd0,0xd2,0xd4,0xd7,
0xd9,0xdb,0xdd,0xdf,0xe1,0xe3,0xe5,0xe7,0xe9,0xea,0xec,0xee,0xef,0xf0,0xf2,0xf3,
0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfb,0xfc,0xfc,0xfd,0xfd,0xfd,0xfd,0xfd,
0xfd,0xfd,0xfd,0xfd,0xfd,0xfc,0xfc,0xfb,0xfb,0xfa,0xf9,0xf8,0xf7,0xf6,0xf5,0xf4,
0xf3,0xf2,0xf0,0xef,0xee,0xec,0xea,0xe9,0xe7,0xe5,0xe3,0xe1,0xdf,0xdd,0xdb,0xd9,
0xd7,0xd4,0xd2,0xd0,0xcd,0xcb,0xc8,0xc6,0xc3,0xc0,0xbe,0xbb,0xb8,0xb5,0xb2,0xaf,
0xad,0xaa,0xa7,0xa4,0xa1,0x9e,0x9b,0x97,0x94,0x91,0x8e,0x8b,0x88,0x85,0x82,0x7f,
0x7c,0x79,0x76,0x73,0x70,0x6d,0x6a,0x67,0x63,0x60,0x5d,0x5a,0x57,0x54,0x51,0x4f,
0x4c,0x49,0x46,0x43,0x40,0x3e,0x3b,0x38,0x36,0x33,0x31,0x2e,0x2c,0x2a,0x27,0x25,
0x23,0x21,0x1f,0x1d,0x1b,0x19,0x17,0x15,0x14,0x12,0x10,0x0f,0x0e,0x0c,0x0b,0x0a,
0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x03,0x02,0x02,0x01,0x01,0x01,0x01,0x01,0x01,
0x01,0x01,0x01,0x01,0x02,0x02,0x03,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,
0x0c,0x0e,0x0f,0x10,0x12,0x14,0x15,0x17,0x19,0x1b,0x1d,0x1f,0x21,0x23,0x25,0x27,
0x2a,0x2c,0x2e,0x31,0x33,0x36,0x38,0x3b,0x3e,0x40,0x43,0x46,0x49,0x4c,0x4f,0x51,
0x54,0x57,0x5a,0x5d,0x60,0x63,0x67,0x6a,0x6d,0x70,0x73,0x76,0x79,0x7c,0x7f
};
volatile uint8_t pwm_setting; // Einstellungen für die einzelnen PWM-Kanäle
volatile uint8_t pwm_overflow; // Einstellungen für die einzelnen PWM-Kanäle
volatile uint8_t pwm_idx; // Einstellungen für die einzelnen PWM-Kanäle
ISR(TIMER2_COMPA_vect) {
static uint8_t pwm_cnt=0;
OCR2A += (uint16_t)T_PWM;
if (pwm_setting> pwm_cnt)
led_pwm_on();
else
led_pwm_off();
if (pwm_cnt==(uint8_t)(PWM_STEPS-1))
pwm_cnt=0;
else
pwm_cnt++;
if (!pwm_overflow++){
pwm_setting = pwm_sine_table[pwm_idx++];
if (PWM_SINE_MAX == pwm_idx)
pwm_idx = 0;
}
}
void pwm_set(uint8_t val) {
pwm_setting = val;
}
void pwm_stop(void) {
while(pwm_setting!=0xfd);
//cli();
TIMSK2 = 0;
//sei();
}
void pwm_init(void) {
pwm_setting = 0x7f;
pwm_overflow = 0;
//cli();
TCCR2B = 1;
TIMSK2 |= (1<<OCIE2A);
//sei();
}

37
avr/usbload/pwm.h Normal file
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@ -0,0 +1,37 @@
/*
* =====================================================================================
*
* ________ .__ __ ________ ____ ________
* \_____ \ __ __|__| ____ | | __\______ \ _______ _/_ |/ _____/
* / / \ \| | \ |/ ___\| |/ / | | \_/ __ \ \/ /| / __ \
* / \_/. \ | / \ \___| < | ` \ ___/\ / | \ |__\ \
* \_____\ \_/____/|__|\___ >__|_ \/_______ /\___ >\_/ |___|\_____ /
* \__> \/ \/ \/ \/ \/
*
* www.optixx.org
*
*
* Version: 1.0
* Created: 07/21/2009 03:32:16 PM
* Author: david@optixx.org
*
* =====================================================================================
*/
#ifndef __PWM_H__
#define __PWM_H__
#define F_PWM 100 // PWM-Frequenz in Hz
#define PWM_STEPS 256 // PWM-Schritte pro Zyklus(1..256)
#define T_PWM (F_CPU/(F_PWM*PWM_STEPS)) // Systemtakte pro PWM-Takt
#if (T_PWM<(93+5))
#error T_PWM zu klein, F_CPU muss vergrösst werden oder F_PWM oder PWM_STEPS verkleinert werden
#endif
void pwm_init(void);
void pwm_stop(void);
#endif

2
avr/usbload/sram.h
View File

@ -137,6 +137,8 @@
#define led_off() ((LED_PORT &=~ (1 << LED_PIN)),\
(LED_DIR |= (1 << LED_PIN)))
#define led_pwm_on() (LED_DIR &=~ (1 << LED_PIN))
#define led_pwm_off() (LED_DIR |= (1 << LED_PIN))
/* ---------------------------- PORT D ---------------------------- */