IEEE 802.15.4 subsystem
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| Source at commit cec05a0f5ea2fb4ff5637d418c7f5dae196abda8 created 6 years 9 months ago. By Werner Almesberger, atusb/atusb.pro: we don't use power.lib anymore | |
|---|---|
| 1 | /* |
| 2 | * fw/board.c - Board-specific functions (for boot loader and application) |
| 3 | * |
| 4 | * Written 2011, 2013 by Werner Almesberger |
| 5 | * Copyright 2011, 2013 Werner Almesberger |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | */ |
| 12 | |
| 13 | |
| 14 | #include <stdbool.h> |
| 15 | #include <stdint.h> |
| 16 | |
| 17 | #include <avr/io.h> |
| 18 | #include <avr/interrupt.h> |
| 19 | #include <avr/boot.h> |
| 20 | |
| 21 | #define F_CPU 8000000UL |
| 22 | #include <util/delay.h> |
| 23 | |
| 24 | #include "usb.h" |
| 25 | #include "at86rf230.h" |
| 26 | #include "board.h" |
| 27 | #include "spi.h" |
| 28 | |
| 29 | |
| 30 | uint8_t board_sernum[42] = { 42, USB_DT_STRING }; |
| 31 | |
| 32 | void reset_rf(void) |
| 33 | { |
| 34 | /* set up all the outputs; default port value is 0 */ |
| 35 | |
| 36 | DDRB = 0; |
| 37 | DDRC = 0; |
| 38 | DDRD = 0; |
| 39 | PORTB = 0; |
| 40 | PORTC = 0; |
| 41 | PORTD = 0; |
| 42 | |
| 43 | OUT(LED); |
| 44 | OUT(nRST_RF); /* this also resets the transceiver */ |
| 45 | OUT(SLP_TR); |
| 46 | |
| 47 | spi_init(); |
| 48 | |
| 49 | /* AT86RF231 data sheet, 12.4.13, reset pulse width: 625 ns (min) */ |
| 50 | |
| 51 | CLR(nRST_RF); |
| 52 | _delay_us(2); |
| 53 | SET(nRST_RF); |
| 54 | |
| 55 | /* 12.4.14: SPI access latency after reset: 625 ns (min) */ |
| 56 | |
| 57 | _delay_us(2); |
| 58 | |
| 59 | /* we must restore TRX_CTRL_0 after each reset (9.6.4) */ |
| 60 | |
| 61 | set_clkm(); |
| 62 | } |
| 63 | |
| 64 | |
| 65 | void led(bool on) |
| 66 | { |
| 67 | if (on) |
| 68 | SET(LED); |
| 69 | else |
| 70 | CLR(LED); |
| 71 | } |
| 72 | |
| 73 | |
| 74 | void panic(void) |
| 75 | { |
| 76 | cli(); |
| 77 | while (1) { |
| 78 | SET(LED); |
| 79 | _delay_ms(100); |
| 80 | CLR(LED); |
| 81 | _delay_ms(100); |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | |
| 86 | static char hex(uint8_t nibble) |
| 87 | { |
| 88 | return nibble < 10 ? '0'+nibble : 'a'+nibble-10; |
| 89 | } |
| 90 | |
| 91 | |
| 92 | void get_sernum(void) |
| 93 | { |
| 94 | uint8_t sig; |
| 95 | uint8_t i; |
| 96 | |
| 97 | for (i = 0; i != 10; i++) { |
| 98 | sig = boot_signature_byte_get(i+0xe); |
| 99 | board_sernum[(i << 2)+2] = hex(sig >> 4); |
| 100 | board_sernum[(i << 2)+4] = hex(sig & 0xf); |
| 101 | } |
| 102 | } |
| 103 | |
