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atusb/fw/: split board functions into app-only/shared part (boot overlflowed)

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- board.c (timer_h, reset_cpu, read_irq, slp_tr, timer_poll,
  timer_read, gpio): moved to new file board_app.c
- Makefile (OBJS): added board_app.o
This commit is contained in:
Werner Almesberger 2011-06-09 12:48:44 -03:00
parent b41076135c
commit e678401ac3
3 changed files with 127 additions and 101 deletions
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2
atusb/fw/Makefile
View File

@ -31,7 +31,7 @@ SIZE = $(AVR_PREFIX)size
USB_ID = 20b7:1540
USB_OBJS = usb.o atu2.o
OBJS = atusb.o board.o sernum.o spi.o descr.o ep0.o $(USB_OBJS)
OBJS = atusb.o board.o board_app.o sernum.o spi.o descr.o ep0.o $(USB_OBJS)
BOOT_OBJS = boot.o board.o sernum.o spi.o flash.o dfu.o $(USB_OBJS)
vpath %.c usb/

101
atusb/fw/board.c
View File

@ -1,5 +1,5 @@
/*
* fw/board.c - Board-specific functions
* fw/board.c - Board-specific functions (for boot loader and application)
*
* Written 2011 by Werner Almesberger
* Copyright 2011 Werner Almesberger
@ -29,9 +29,6 @@
uint8_t board_sernum[42] = { 42, USB_DT_STRING };
static uint32_t timer_h = 0; /* 2^(16+32) / 8 MHz = ~1.1 years */
static void set_clkm(void)
{
/* switch CLKM to 8 MHz */
@ -84,25 +81,6 @@ void reset_rf(void)
}
void reset_cpu(void)
{
WDTCSR = 1 << WDE;
}
uint8_t read_irq(void)
{
return PIN(IRQ_RF);
}
void slp_tr(void)
{
SET(SLP_TR);
CLR(SLP_TR);
}
void led(int on)
{
if (on)
@ -124,36 +102,6 @@ void panic(void)
}
void timer_poll(void)
{
if (!(TIFR1 & (1 << TOV1)))
return;
TIFR1 = 1 << TOV1;
timer_h++;
}
uint64_t timer_read(void)
{
uint32_t high;
uint8_t low, mid;
do {
timer_poll();
high = timer_h;
low = TCNT1L;
mid = TCNT1H;
}
while (TIFR1 & (1 << TOV1));
/*
* We need all these casts because the intermediate results are handled
* as if they were signed and thus get sign-expanded. Sounds wrong-ish.
*/
return (uint64_t) high << 16 | (uint64_t) mid << 8 | (uint64_t) low;
}
static char hex(uint8_t nibble)
{
return nibble < 10 ? '0'+nibble : 'a'+nibble-10;
@ -173,53 +121,6 @@ static void get_sernum(void)
}
int gpio(uint8_t port, uint8_t data, uint8_t dir, uint8_t mask, uint8_t *res)
{
switch (port) {
case 1:
DDRB = (DDRB & ~mask) | dir;
PORTB = (PORTB & ~mask) | data;
break;
case 2:
DDRC = (DDRC & ~mask) | dir;
PORTC = (PORTC & ~mask) | data;
break;
case 3:
DDRD = (DDRD & ~mask) | dir;
PORTD = (PORTD & ~mask) | data;
break;
default:
return 0;
}
/* disable the UART so that we can meddle with these pins as well. */
UCSR1B = 0;
_delay_ms(1);
switch (port) {
case 1:
res[0] = PINB;
res[1] = PORTB;
res[2] = DDRB;
break;
case 2:
res[0] = PINC;
res[1] = PORTC;
res[2] = DDRC;
break;
case 3:
res[0] = PIND;
res[1] = PORTD;
res[2] = DDRD;
break;
}
spi_init();
return 1;
}
void board_init(void)
{
/* Disable the watchdog timer */

125
atusb/fw/board_app.c Normal file
View File

@ -0,0 +1,125 @@
/*
* fw/board_app.c - Board-specific functions (for the application)
*
* Written 2011 by Werner Almesberger
* Copyright 2011 Werner Almesberger
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <stdint.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/boot.h>
#define F_CPU 8000000UL
#include <util/delay.h>
#include "usb.h"
#include "at86rf230.h"
#include "board.h"
#include "spi.h"
static uint32_t timer_h = 0; /* 2^(16+32) / 8 MHz = ~1.1 years */
void reset_cpu(void)
{
WDTCSR = 1 << WDE;
}
uint8_t read_irq(void)
{
return PIN(IRQ_RF);
}
void slp_tr(void)
{
SET(SLP_TR);
CLR(SLP_TR);
}
void timer_poll(void)
{
if (!(TIFR1 & (1 << TOV1)))
return;
TIFR1 = 1 << TOV1;
timer_h++;
}
uint64_t timer_read(void)
{
uint32_t high;
uint8_t low, mid;
do {
timer_poll();
high = timer_h;
low = TCNT1L;
mid = TCNT1H;
}
while (TIFR1 & (1 << TOV1));
/*
* We need all these casts because the intermediate results are handled
* as if they were signed and thus get sign-expanded. Sounds wrong-ish.
*/
return (uint64_t) high << 16 | (uint64_t) mid << 8 | (uint64_t) low;
}
int gpio(uint8_t port, uint8_t data, uint8_t dir, uint8_t mask, uint8_t *res)
{
switch (port) {
case 1:
DDRB = (DDRB & ~mask) | dir;
PORTB = (PORTB & ~mask) | data;
break;
case 2:
DDRC = (DDRC & ~mask) | dir;
PORTC = (PORTC & ~mask) | data;
break;
case 3:
DDRD = (DDRD & ~mask) | dir;
PORTD = (PORTD & ~mask) | data;
break;
default:
return 0;
}
/* disable the UART so that we can meddle with these pins as well. */
UCSR1B = 0;
_delay_ms(1);
switch (port) {
case 1:
res[0] = PINB;
res[1] = PORTB;
res[2] = DDRB;
break;
case 2:
res[0] = PINC;
res[1] = PORTC;
res[2] = DDRC;
break;
case 3:
res[0] = PIND;
res[1] = PORTD;
res[2] = DDRD;
break;
}
spi_init();
return 1;
}