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git://projects.qi-hardware.com/ben-wpan.git
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ea23c905d3
The Busware HUL v1.1 dongle is a product very similar to the rzusb dongle but with the at86rf212 instead of the at86rf230 transceiver. Some code refactoring has been made in order to better support multiple hardware targets. This includes: The reset_rf functions are now in the board specific files. The led functions are now in the board specific files. The register read/write functions are moved from mac.c to the generic board.c file as they are used by functions like reset_rf that are not within the mac.c file. Also the subreg_read and subreg_write functions were introduced for convenience. The function to change state is now also in board.c. The hardware types are moved into the atusb.h file (which is always synchrornized with the linux atusb driver) because they are now used by the driver to identify and configure the hardware. Within the makefile a new target name is specified called: hulusb Signed-off-by: Josef Filzmaier <j.filzmaier@gmx.at>
174 lines
2.7 KiB
C
174 lines
2.7 KiB
C
/*
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* fw/board_app.c - Board-specific functions (for the application)
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*
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* Written 2011, 2013 by Werner Almesberger
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* Copyright 2011, 2013 Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <stddef.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#define F_CPU 8000000UL
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#include <util/delay.h>
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#include "usb.h"
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#include "at86rf230.h"
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#include "spi.h"
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#include "mac.h"
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#include "board.h"
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static volatile uint32_t timer_h = 0; /* 2^(16+32) / 8 MHz = ~1.1 years */
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void reset_cpu(void)
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{
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WDTCSR = 1 << WDE;
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}
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uint8_t read_irq(void)
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{
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return PIN(IRQ_RF);
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}
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void slp_tr(void)
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{
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SET(SLP_TR);
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CLR(SLP_TR);
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}
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ISR(TIMER1_OVF_vect)
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{
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timer_h++;
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}
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uint64_t timer_read(void)
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{
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uint32_t high;
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uint8_t low, mid;
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do {
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if (TIFR1 & (1 << TOV1)) {
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TIFR1 = 1 << TOV1;
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timer_h++;
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}
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high = timer_h;
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low = TCNT1L;
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mid = TCNT1H;
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}
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while (TIFR1 & (1 << TOV1));
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/*
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* We need all these casts because the intermediate results are handled
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* as if they were signed and thus get sign-expanded. Sounds wrong-ish.
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*/
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return (uint64_t) high << 16 | (uint64_t) mid << 8 | (uint64_t) low;
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}
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void timer_init(void)
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{
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/* configure timer 1 as a free-running CLK counter */
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TCCR1A = 0;
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TCCR1B = 1 << CS10;
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/* enable timer overflow interrupt */
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TIMSK1 = 1 << TOIE1;
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}
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bool gpio(uint8_t port, uint8_t data, uint8_t dir, uint8_t mask, uint8_t *res)
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{
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EIMSK = 0; /* recover INT_RF to ATUSB_GPIO_CLEANUP or an MCU reset */
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switch (port) {
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case 1:
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DDRB = (DDRB & ~mask) | dir;
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PORTB = (PORTB & ~mask) | data;
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break;
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case 2:
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DDRC = (DDRC & ~mask) | dir;
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PORTC = (PORTC & ~mask) | data;
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break;
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case 3:
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DDRD = (DDRD & ~mask) | dir;
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PORTD = (PORTD & ~mask) | data;
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break;
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default:
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return 0;
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}
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/* disable the UART so that we can meddle with these pins as well. */
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spi_off();
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_delay_ms(1);
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switch (port) {
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case 1:
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res[0] = PINB;
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res[1] = PORTB;
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res[2] = DDRB;
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break;
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case 2:
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res[0] = PINC;
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res[1] = PORTC;
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res[2] = DDRC;
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break;
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case 3:
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res[0] = PIND;
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res[1] = PORTD;
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res[2] = DDRD;
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break;
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}
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return 1;
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}
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void gpio_cleanup(void)
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{
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EIMSK = 1 << 0;
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}
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static void done(void *user)
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{
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led(0);
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}
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uint8_t irq_serial;
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#if defined(ATUSB) || defined(HULUSB)
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ISR(INT0_vect)
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#endif
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#ifdef RZUSB
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ISR(TIMER1_CAPT_vect)
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#endif
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{
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if (mac_irq) {
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if (mac_irq())
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return;
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}
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if (eps[1].state == EP_IDLE) {
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led(1);
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irq_serial = (irq_serial+1) | 0x80;
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usb_send(&eps[1], &irq_serial, 1, done, NULL);
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}
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}
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