mirror of
git://projects.qi-hardware.com/ben-wpan.git
synced 2024-11-23 04:23:10 +02:00
968721c335
Move board specific code form spi, usb and board_app into the new board specific files to avoid to many ifdefs.
130 lines
2.8 KiB
C
130 lines
2.8 KiB
C
/*
|
|
* fw/board_rzusb.c - RZUSB Board-specific functions (for boot loader and application)
|
|
*
|
|
* Written 2016 by Stefan Schmidt
|
|
* Copyright 2016 Stefan Schmidt
|
|
*
|
|
* 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 <stdbool.h>
|
|
#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"
|
|
#include "usb/usb.h"
|
|
|
|
static bool spi_initialized = 0;
|
|
|
|
void set_clkm(void)
|
|
{
|
|
/* switch CLKM to 8 MHz */
|
|
|
|
/*
|
|
* @@@ Note: Atmel advise against changing the external clock in
|
|
* mid-flight. We should therefore switch to the RC clock first, then
|
|
* crank up the external clock, and finally switch back to the external
|
|
* clock. The clock switching procedure is described in the ATmega32U2
|
|
* data sheet in secton 8.2.2.
|
|
*/
|
|
spi_begin();
|
|
spi_send(AT86RF230_REG_WRITE | REG_TRX_CTRL_0);
|
|
spi_send(0x10);
|
|
spi_end();
|
|
|
|
/* TX_AUTO_CRC_ON, default disabled */
|
|
spi_begin();
|
|
spi_send(AT86RF230_REG_WRITE | 0x05);
|
|
spi_send(0x80);
|
|
spi_end();
|
|
}
|
|
|
|
void board_init(void)
|
|
{
|
|
/* Disable the watchdog timer */
|
|
|
|
MCUSR = 0; /* Remove override */
|
|
WDTCSR |= 1 << WDCE; /* Enable change */
|
|
WDTCSR = 1 << WDCE; /* Disable watchdog while still enabling
|
|
change */
|
|
|
|
CLKPR = 1 << CLKPCE;
|
|
/* We start with a 16 MHz/8 clock. Put the prescaler to 2. */
|
|
CLKPR = 1 << CLKPS0;
|
|
|
|
get_sernum();
|
|
}
|
|
|
|
void spi_begin(void)
|
|
{
|
|
if (!spi_initialized)
|
|
spi_init();
|
|
CLR(nSS);
|
|
}
|
|
|
|
void spi_off(void)
|
|
{
|
|
spi_initialized = 0;
|
|
SPCR &= ~(1 << SPE);
|
|
}
|
|
|
|
void spi_init(void)
|
|
{
|
|
SET(nSS);
|
|
OUT(SCLK);
|
|
OUT(MOSI);
|
|
OUT(nSS);
|
|
IN(MISO);
|
|
|
|
SPCR = (1 << SPE) | (1 << MSTR);
|
|
SPSR = (1 << SPI2X);
|
|
|
|
spi_initialized = 1;
|
|
}
|
|
|
|
void usb_init(void)
|
|
{
|
|
USBCON |= 1 << FRZCLK; /* freeze the clock */
|
|
|
|
/* enable the PLL and wait for it to lock */
|
|
/* TODO sheet page 50 For Atmel AT90USB128x only. Do not use with Atmel AT90USB64x. */
|
|
/* FOR 8 XTAL Mhz only!!! */
|
|
PLLCSR = ((1 << PLLP1) | (1 << PLLP0));
|
|
PLLCSR |= 1 << PLLE;
|
|
while (!(PLLCSR & (1 << PLOCK)));
|
|
|
|
UHWCON |= (1 << UVREGE);
|
|
|
|
USBCON &= ~((1 << USBE) | (1 << OTGPADE)); /* reset the controller */
|
|
USBCON |= ((1 << USBE) | (1 << OTGPADE));
|
|
|
|
USBCON &= ~(1 << FRZCLK); /* thaw the clock */
|
|
|
|
UDCON &= ~(1 << DETACH); /* attach the pull-up */
|
|
UDIEN = 1 << EORSTE; /* enable device interrupts */
|
|
// UDCON |= 1 << RSTCPU; /* reset CPU on bus reset */
|
|
|
|
ep_init();
|
|
}
|
|
|
|
void board_app_init(void)
|
|
{
|
|
/* enable timer input capture 1, trigger on rising edge */
|
|
TCCR1B = (1 << ICES1);
|
|
TIFR1 = (1 << ICF1);
|
|
TIMSK1 = (1 << ICIE1);
|
|
}
|