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atusb/fw3/: added copyright headers and title comments
This commit is contained in:
Werner Almesberger
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96f0f2cfc9
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/*
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* fw/atusb.c - ATUSB initialization and main loop
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*
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* Written 2008-2011 by Werner Almesberger
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* Copyright 2008-2011 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 <stdint.h>
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#include <avr/io.h>
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139
atusb/fw3/board.c
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139
atusb/fw3/board.c
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/*
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* fw/board.c - Board-specific functions
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*
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* Written 2011 by Werner Almesberger
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* Copyright 2011 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 <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 "at86rf230.h"
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#include "board.h"
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#include "spi.h"
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static void set_clkm(void)
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{
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/* switch CLKM to 8 MHz */
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/*
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* @@@ Note: Atmel advise against changing the external clock in
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* mid-flight. We should therefore switch to the RC clock first, then
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* crank up the external clock, and finally switch back to the external
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* clock. The clock switching procedure is described in the ATmega32U2
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* data sheet in secton 8.2.2.
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*/
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spi_begin();
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spi_send(AT86RF230_REG_WRITE | REG_TRX_CTRL_0);
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spi_send(CLKM_CTRL_8MHz);
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spi_end();
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}
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void reset_rf(void)
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{
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/* AT86RF231 data sheet, 12.4.13, reset pulse width: 625 ns (min) */
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CLR(nRST_RF);
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_delay_us(1);
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SET(nRST_RF);
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/* 12.4.14: SPI access latency after reset: 625 ns (min) */
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_delay_us(1);
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/* we must restore TRX_CTRL_0 after each reset (9.6.4) */
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set_clkm();
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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 led(int on)
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{
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if (on)
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SET(LED);
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else
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CLR(LED);
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}
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void panic(void)
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{
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cli();
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while (1) {
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SET(LED);
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_delay_ms(100);
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CLR(LED);
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_delay_ms(100);
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}
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}
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void board_init(void)
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{
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/* We start with a 1 MHz/8 clock. Disable the prescaler. */
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CLKPR = 1 << CLKPCE;
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CLKPR = 0;
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/* set up all the outputs; default port value is 0 */
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OUT(LED);
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OUT(nRST_RF); /* resets the transceiver */
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OUT(SLP_TR);
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}
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static void wr(uint8_t reg, uint8_t val)
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{
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spi_begin();
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spi_send(AT86RF230_REG_WRITE | reg);
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spi_send(val);
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spi_end();
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}
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void rf_init(void)
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{
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wr(REG_TRX_STATE, TRX_CMD_TRX_OFF);
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wr(REG_IRQ_MASK, 0xff);
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_delay_us(50);
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}
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void rf_send(const char *s)
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{
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const char *p;
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int len = 0;
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wr(REG_TRX_STATE, TRX_CMD_PLL_ON);
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for (p = s; *p; p++)
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len++;
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spi_begin();
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spi_send(AT86RF230_BUF_WRITE);
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spi_send(len);
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while (*s)
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spi_send(*s++);
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spi_end();
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wr(REG_TRX_STATE, TRX_CMD_TX_START);
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_delay_ms(10);
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}
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@ -1,3 +1,15 @@
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/*
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* fw/board.h - Board-specific functions and definitions
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*
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* Written 2008-2010 by Werner Almesberger
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* Copyright 2008-2010 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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#ifndef BOARD_H
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#define BOARD_H
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@ -42,6 +54,7 @@
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#define OUT(n) OUT_1(n##_PORT, n##_BIT)
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#define PIN(n) PIN_1(n##_PORT, n##_BIT)
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void reset_rf(void);
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uint8_t read_irq(void);
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void led(int on);
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@ -1,5 +1,5 @@
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/*
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* atspi/descr.c - USB descriptors
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* fw/descr.c - USB descriptors
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*
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* Written 2008-2011 by Werner Almesberger
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* Copyright 2008-2011 Werner Almesberger
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@ -1,8 +1,8 @@
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/*
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* atspi/ep0.c - EP0 extension protocol
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* fw/ep0.c - EP0 extension protocol
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*
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* Written 2008-2010 by Werner Almesberger
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* Copyright 2008-2010 Werner Almesberger
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* Written 2008-2011 by Werner Almesberger
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* Copyright 2008-2011 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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@ -19,10 +19,6 @@
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#define NULL 0
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#endif
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//#include "regs.h"
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//#include "uart.h"
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//#include "usb.h"
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#include "usb.h"
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#include "at86rf230.h"
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@ -1,3 +1,16 @@
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/*
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* fw/spi.c - ATmega8 family SPI I/O
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*
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* Written 2011 by Werner Almesberger
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* Copyright 2011 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 <stdint.h>
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#include <avr/io.h>
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@ -1,3 +1,15 @@
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/*
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* fw/spi.h - ATmega8 family SPI I/O
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*
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* Written 2011 by Werner Almesberger
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* Copyright 2011 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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#ifndef SPI_H
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#define SPI_H
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@ -1,5 +1,5 @@
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/*
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* u/atu2.c - Chip-specific driver for Atmel ATxxxU2 USB chips
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* fw/usb/atu2.c - Chip-specific driver for Atmel ATxxxU2 USB chips
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*
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* Written 2008-2011 by Werner Almesberger
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* Copyright 2008-2011 Werner Almesberger
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@ -1,5 +1,5 @@
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/*
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* u/usb.c - USB hardware setup and standard device requests
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* fw/usb/usb.c - USB hardware setup and standard device requests
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*
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* Written 2008-2011 by Werner Almesberger
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* Copyright 2008-2011 Werner Almesberger
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@ -1,5 +1,5 @@
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/*
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* common/usb.h - USB hardware setup and standard device requests
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* fw/usb//usb.h - USB hardware setup and standard device requests
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*
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* Written 2008, 2009 by Werner Almesberger
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* Copyright 2008, 2009 Werner Almesberger
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@ -1,5 +1,5 @@
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/*
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* boot/version.h - Automatically generated version string
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* fw/version.h - Automatically generated version string
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*
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* Written 2008, 2011 by Werner Almesberger
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* Copyright 2008, 2011 Werner Almesberger
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