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1 | /**************************************************************************** |
1 | /**************************************************************************** |
2 | * Copyright (C) 2009 by Claas Anders "CaScAdE" Rathje * |
2 | * Copyright (C) 2009 by Claas Anders "CaScAdE" Rathje * |
3 | * admiralcascade@gmail.com * |
3 | * admiralcascade@gmail.com * |
4 | * Project-URL: http://www.mylifesucks.de/oss/c-osd/ * |
4 | * Project-URL: http://www.mylifesucks.de/oss/c-osd/ * |
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 | ||
- | 21 | /* |
|
- | 22 | * structs 'n union for easy SPI transfer |
|
- | 23 | */ |
|
- | 24 | typedef struct { |
|
- | 25 | int16_t ampere; |
|
- | 26 | int32_t mah; |
|
- | 27 | int16_t volt; |
|
- | 28 | } __attribute__((packed)) SPI_strom_data_t; |
|
- | 29 | ||
- | 30 | typedef struct { |
|
- | 31 | uint8_t c[10]; |
|
- | 32 | uint8_t chk; |
|
- | 33 | } __attribute__((packed)) SPI_char_buffer_t; |
|
- | 34 | ||
- | 35 | union SPI_buffer_t { |
|
- | 36 | SPI_strom_data_t data; |
|
- | 37 | SPI_char_buffer_t buffer; |
|
- | 38 | }; |
|
- | 39 | ||
- | 40 | volatile union SPI_buffer_t SPI_buffer; |
|
20 | 41 | ||
21 | /** |
42 | /** |
22 | * SPI interrupt handler |
43 | * SPI interrupt handler |
23 | */ |
44 | */ |
24 | ISR(SPI_STC_vect); |
45 | ISR(SPI_STC_vect); |
25 | 46 | ||
26 | /** |
47 | /** |
27 | * init the SPI as master |
48 | * init the SPI as master |
28 | */ |
49 | */ |
29 | void SpiMasterInit(void); |
50 | void SpiMasterInit(void); |
30 | 51 | ||
31 | /** |
52 | /** |
32 | * check if SPI transfer is still busy |
53 | * check if SPI transfer is still busy |
33 | */ |
54 | */ |
34 | int TransferIsBusy(void); |
55 | int TransferIsBusy(void); |
35 | 56 | ||
36 | /** |
57 | /** |
37 | * start a new transfer of <data> with length <len> |
58 | * start a new transfer with length <len> |
- | 59 | */ |
|
- | 60 | void StartTransfer(uint16_t); |
|
- | 61 | ||
- | 62 | /** |
|
- | 63 | * send next command through spi |
|
38 | */ |
64 | */ |
39 | void StartTransfer(unsigned char *, uint16_t); |
65 | void spi_send_next(); |
40 | 66 |