iforce2d Chris / Mbed 2 deprecated ubxDistanceMeter

Displays distance to start location on OLED screen.

Dependencies:   mbed

u8g_com_arduino_attiny85_hw_spi.c@0:972874f31c98, 2018-03-07 (annotated)

Committer:
iforce2d
Date:
Wed Mar 07 12:49:14 2018 +0000
Revision:
0:972874f31c98
First commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
iforce2d 0:972874f31c98 1 /*
iforce2d 0:972874f31c98 2
iforce2d 0:972874f31c98 3 u8g_arduino_ATtiny85_std_hw_spi.c
iforce2d 0:972874f31c98 4
iforce2d 0:972874f31c98 5 Universal 8bit Graphics Library
iforce2d 0:972874f31c98 6
iforce2d 0:972874f31c98 7 Copyright (c) 2011, olikraus@gmail.com
iforce2d 0:972874f31c98 8 All rights reserved.
iforce2d 0:972874f31c98 9
iforce2d 0:972874f31c98 10 Redistribution and use in source and binary forms, with or without modification,
iforce2d 0:972874f31c98 11 are permitted provided that the following conditions are met:
iforce2d 0:972874f31c98 12
iforce2d 0:972874f31c98 13 * Redistributions of source code must retain the above copyright notice, this list
iforce2d 0:972874f31c98 14 of conditions and the following disclaimer.
iforce2d 0:972874f31c98 15
iforce2d 0:972874f31c98 16 * Redistributions in binary form must reproduce the above copyright notice, this
iforce2d 0:972874f31c98 17 list of conditions and the following disclaimer in the documentation and/or other
iforce2d 0:972874f31c98 18 materials provided with the distribution.
iforce2d 0:972874f31c98 19
iforce2d 0:972874f31c98 20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
iforce2d 0:972874f31c98 21 CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
iforce2d 0:972874f31c98 22 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
iforce2d 0:972874f31c98 23 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
iforce2d 0:972874f31c98 24 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
iforce2d 0:972874f31c98 25 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
iforce2d 0:972874f31c98 26 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
iforce2d 0:972874f31c98 27 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
iforce2d 0:972874f31c98 28 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
iforce2d 0:972874f31c98 29 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
iforce2d 0:972874f31c98 30 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
iforce2d 0:972874f31c98 31 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
iforce2d 0:972874f31c98 32 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
iforce2d 0:972874f31c98 33
iforce2d 0:972874f31c98 34 */
iforce2d 0:972874f31c98 35
iforce2d 0:972874f31c98 36 // Uses code from tinySPI Written by Nick Gammon
iforce2d 0:972874f31c98 37 // March 2013
iforce2d 0:972874f31c98 38
iforce2d 0:972874f31c98 39 // ATMEL ATTINY45 / ARDUINO pin mappings
iforce2d 0:972874f31c98 40 //
iforce2d 0:972874f31c98 41 // +-\/-+
iforce2d 0:972874f31c98 42 // RESET Ain0 (D 5) PB5 1| |8 Vcc
iforce2d 0:972874f31c98 43 // CLK1 Ain3 (D 3) PB3 2| |7 PB2 (D 2) Ain1 SCK / USCK / SCL
iforce2d 0:972874f31c98 44 // CLK0 Ain2 (D 4) PB4 3| |6 PB1 (D 1) pwm1 MISO / DO
iforce2d 0:972874f31c98 45 // GND 4| |5 PB0 (D 0) pwm0 MOSI / DI / SDA
iforce2d 0:972874f31c98 46 // +----+
iforce2d 0:972874f31c98 47
iforce2d 0:972874f31c98 48
iforce2d 0:972874f31c98 49 #include "u8g.h"
iforce2d 0:972874f31c98 50
iforce2d 0:972874f31c98 51
iforce2d 0:972874f31c98 52 #if defined(ARDUINO) && defined(__AVR_ATtiny85__)
iforce2d 0:972874f31c98 53
iforce2d 0:972874f31c98 54 #if ARDUINO < 100
iforce2d 0:972874f31c98 55 #include <WProgram.h>
iforce2d 0:972874f31c98 56 #else
iforce2d 0:972874f31c98 57 #include <Arduino.h>
iforce2d 0:972874f31c98 58 #endif
iforce2d 0:972874f31c98 59
iforce2d 0:972874f31c98 60 const byte DI = 0; // D0, pin 5 Data In
iforce2d 0:972874f31c98 61 const byte DO = 1; // D1, pin 6 Data Out (this is *not* MOSI)
iforce2d 0:972874f31c98 62 const byte USCK = 2; // D2, pin 7 Universal Serial Interface clock
iforce2d 0:972874f31c98 63
iforce2d 0:972874f31c98 64 uint8_t u8g_arduino_ATtiny85_spi_out(uint8_t val)
iforce2d 0:972874f31c98 65 {
iforce2d 0:972874f31c98 66 USIDR = val; // byte to output
iforce2d 0:972874f31c98 67 USISR = _BV (USIOIF); // clear Counter Overflow Interrupt Flag, set count to zero
iforce2d 0:972874f31c98 68 do
iforce2d 0:972874f31c98 69 {
iforce2d 0:972874f31c98 70 USICR = _BV (USIWM0) // 3-wire mode
iforce2d 0:972874f31c98 71 | _BV (USICS1) | _BV (USICLK) // Software clock strobe
iforce2d 0:972874f31c98 72 | _BV (USITC); // Toggle Clock Port Pin
iforce2d 0:972874f31c98 73 }
iforce2d 0:972874f31c98 74 while ((USISR & _BV (USIOIF)) == 0); // until Counter Overflow Interrupt Flag set
iforce2d 0:972874f31c98 75
iforce2d 0:972874f31c98 76 return USIDR; // return read data
iforce2d 0:972874f31c98 77 }
iforce2d 0:972874f31c98 78
iforce2d 0:972874f31c98 79 uint8_t u8g_com_arduino_ATtiny85_std_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
iforce2d 0:972874f31c98 80 {
iforce2d 0:972874f31c98 81 switch(msg)
iforce2d 0:972874f31c98 82 {
iforce2d 0:972874f31c98 83 case U8G_COM_MSG_INIT:
iforce2d 0:972874f31c98 84 u8g_com_arduino_digital_write(u8g, U8G_PI_CS, HIGH); // ensure SS stays high until needed
iforce2d 0:972874f31c98 85 pinMode (USCK, OUTPUT);
iforce2d 0:972874f31c98 86 pinMode (DO, OUTPUT);
iforce2d 0:972874f31c98 87 pinMode (u8g->pin_list[U8G_PI_CS], OUTPUT);
iforce2d 0:972874f31c98 88 pinMode (u8g->pin_list[U8G_PI_A0], OUTPUT);
iforce2d 0:972874f31c98 89 USICR = _BV (USIWM0); // 3-wire mode
iforce2d 0:972874f31c98 90 u8g_MicroDelay();
iforce2d 0:972874f31c98 91 break;
iforce2d 0:972874f31c98 92
iforce2d 0:972874f31c98 93 case U8G_COM_MSG_STOP:
iforce2d 0:972874f31c98 94 break;
iforce2d 0:972874f31c98 95
iforce2d 0:972874f31c98 96 case U8G_COM_MSG_RESET:
iforce2d 0:972874f31c98 97 if ( u8g->pin_list[U8G_PI_RESET] != U8G_PIN_NONE )
iforce2d 0:972874f31c98 98 u8g_com_arduino_digital_write(u8g, U8G_PI_RESET, arg_val);
iforce2d 0:972874f31c98 99 break;
iforce2d 0:972874f31c98 100
iforce2d 0:972874f31c98 101 case U8G_COM_MSG_CHIP_SELECT:
iforce2d 0:972874f31c98 102 if ( arg_val == 0 )
iforce2d 0:972874f31c98 103 {
iforce2d 0:972874f31c98 104 /* disable */
iforce2d 0:972874f31c98 105 u8g_MicroDelay();
iforce2d 0:972874f31c98 106 u8g_com_arduino_digital_write(u8g, U8G_PI_CS, HIGH);
iforce2d 0:972874f31c98 107 u8g_MicroDelay();
iforce2d 0:972874f31c98 108 }
iforce2d 0:972874f31c98 109 else
iforce2d 0:972874f31c98 110 {
iforce2d 0:972874f31c98 111 /* enable */
iforce2d 0:972874f31c98 112 u8g_com_arduino_digital_write(u8g, U8G_PI_CS, LOW);
iforce2d 0:972874f31c98 113 u8g_MicroDelay();
iforce2d 0:972874f31c98 114 }
iforce2d 0:972874f31c98 115 break;
iforce2d 0:972874f31c98 116
iforce2d 0:972874f31c98 117 case U8G_COM_MSG_WRITE_BYTE:
iforce2d 0:972874f31c98 118 u8g_arduino_ATtiny85_spi_out(arg_val);
iforce2d 0:972874f31c98 119 u8g_MicroDelay();
iforce2d 0:972874f31c98 120 break;
iforce2d 0:972874f31c98 121
iforce2d 0:972874f31c98 122 case U8G_COM_MSG_WRITE_SEQ:
iforce2d 0:972874f31c98 123 {
iforce2d 0:972874f31c98 124 register uint8_t *ptr = arg_ptr;
iforce2d 0:972874f31c98 125 while( arg_val > 0 )
iforce2d 0:972874f31c98 126 {
iforce2d 0:972874f31c98 127 u8g_arduino_ATtiny85_spi_out(*ptr++);
iforce2d 0:972874f31c98 128 arg_val--;
iforce2d 0:972874f31c98 129 }
iforce2d 0:972874f31c98 130 }
iforce2d 0:972874f31c98 131 break;
iforce2d 0:972874f31c98 132
iforce2d 0:972874f31c98 133 case U8G_COM_MSG_WRITE_SEQ_P:
iforce2d 0:972874f31c98 134 {
iforce2d 0:972874f31c98 135 register uint8_t *ptr = arg_ptr;
iforce2d 0:972874f31c98 136 while( arg_val > 0 )
iforce2d 0:972874f31c98 137 {
iforce2d 0:972874f31c98 138 u8g_arduino_ATtiny85_spi_out(u8g_pgm_read(ptr));
iforce2d 0:972874f31c98 139 ptr++;
iforce2d 0:972874f31c98 140 arg_val--;
iforce2d 0:972874f31c98 141 }
iforce2d 0:972874f31c98 142 }
iforce2d 0:972874f31c98 143 break;
iforce2d 0:972874f31c98 144
iforce2d 0:972874f31c98 145 case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */
iforce2d 0:972874f31c98 146 u8g_com_arduino_digital_write(u8g, U8G_PI_A0, arg_val);
iforce2d 0:972874f31c98 147 u8g_MicroDelay();
iforce2d 0:972874f31c98 148 break;
iforce2d 0:972874f31c98 149 }
iforce2d 0:972874f31c98 150 return 1;
iforce2d 0:972874f31c98 151 }
iforce2d 0:972874f31c98 152
iforce2d 0:972874f31c98 153 #else /* ARDUINO */
iforce2d 0:972874f31c98 154
iforce2d 0:972874f31c98 155 uint8_t u8g_com_arduino_ATtiny85_std_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
iforce2d 0:972874f31c98 156 {
iforce2d 0:972874f31c98 157 return 1;
iforce2d 0:972874f31c98 158 }
iforce2d 0:972874f31c98 159
iforce2d 0:972874f31c98 160 #endif /* ARDUINO */