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1 | /**************************************************************************** |
1 | /**************************************************************************** |
2 | * Copyright (C) 2009-2010 by Claas Anders "CaScAdE" Rathje * |
2 | * Copyright (C) 2009-2011 by Claas Anders "CaScAdE" Rathje * |
3 | * admiralcascade@gmail.com * |
3 | * admiralcascade@gmail.com * |
4 | * Project-URL: http://www.mylifesucks.de/oss/c-strom/ * |
4 | * Project-URL: http://www.mylifesucks.de/oss/c-strom/ * |
5 | * * |
5 | * * |
6 | * This program is free software; you can redistribute it and/or modify * |
6 | * This program is free software; you can redistribute it and/or modify * |
7 | * it under the terms of the GNU General Public License as published by * |
7 | * it under the terms of the GNU General Public License as published by * |
8 | * the Free Software Foundation; either version 2 of the License. * |
8 | * the Free Software Foundation; either version 2 of the License. * |
9 | * * |
9 | * * |
10 | * This program is distributed in the hope that it will be useful, * |
10 | * This program is distributed in the hope that it will be useful, * |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
13 | * GNU General Public License for more details. * |
13 | * GNU General Public License for more details. * |
14 | * * |
14 | * * |
15 | * You should have received a copy of the GNU General Public License * |
15 | * You should have received a copy of the GNU General Public License * |
16 | * along with this program; if not, write to the * |
16 | * along with this program; if not, write to the * |
17 | * Free Software Foundation, Inc., * |
17 | * Free Software Foundation, Inc., * |
18 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
18 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
19 | ****************************************************************************/ |
19 | ****************************************************************************/ |
20 | 20 | ||
21 | Console listens at 8n1 19200... Commands are explained there... |
21 | Console listens at 8n1 19200... Commands are explained there... |
22 | 22 | ||
23 | 23 | ||
24 | ############################################################################# |
24 | ############################################################################# |
25 | i2c/twi Sample snipplet |
25 | i2c/twi Sample snipplet |
26 | // i2c master libary by Peter Fleury used in this example |
26 | // i2c master libary by Peter Fleury used in this example |
27 | // http://homepage.hispeed.ch/peterfleury/avr-software.html#libs |
27 | // http://homepage.hispeed.ch/peterfleury/avr-software.html#libs |
28 | 28 | ||
29 | #define CSTROM_I2C 0x20 |
29 | #define CSTROM_I2C 0x20 |
30 | 30 | ||
31 | i2c_init(); |
31 | i2c_init(); |
32 | sei(); |
32 | sei(); |
33 | 33 | ||
34 | union SPI_buffer_t SPI_buffer; |
34 | union SPI_buffer_t SPI_buffer; |
35 | // @see http://svn.mikrokopter.de/mikrowebsvn/filedetails.php?repname=Projects&path=%2FC-OSD%2Ftrunk%2Fspi.h |
35 | // @see http://svn.mikrokopter.de/mikrowebsvn/filedetails.php?repname=Projects&path=%2FC-OSD%2Ftrunk%2Fspi.h |
36 | 36 | ||
37 | if(!(i2c_start(CSTROM_I2C+I2C_WRITE))) { // check for slave ready |
37 | if(!(i2c_start(CSTROM_I2C+I2C_WRITE))) { // check for slave ready |
38 | i2c_write(0x00); // start with buffer address 0 |
38 | i2c_write(0x00); // start with buffer address 0 |
39 | i2c_rep_start(CSTROM_I2C+I2C_READ); // start reading |
39 | i2c_rep_start(CSTROM_I2C+I2C_READ); // start reading |
40 | for (uint8_t i = 0; i < 9; i++) { // loop through first 9 positions |
40 | for (uint8_t i = 0; i < 9; i++) { // loop through first 9 positions |
41 | SPI_buffer.buffer.c[i] = i2c_readAck(); |
41 | SPI_buffer.buffer.c[i] = i2c_readAck(); |
42 | } |
42 | } |
43 | SPI_buffer.buffer.c[9] = i2c_readNak(); // last position does not take ACK |
43 | SPI_buffer.buffer.c[9] = i2c_readNak(); // last position does not take ACK |
44 | i2c_stop(); |
44 | i2c_stop(); |
45 | } |
45 | } |
46 | uart_puts(itoa(SPI_buffer.data.volt, s, 10)); |
46 | uart_puts(itoa(SPI_buffer.data.volt, s, 10)); |
47 | uart_puts_pgm(PSTR("V\r\n")); |
47 | uart_puts_pgm(PSTR("V\r\n")); |
48 | ############################################################################# |
48 | ############################################################################# |