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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 471 | cascade | 1 | /**************************************************************************** |
| 2 | * Copyright (C) 2009 by Claas Anders "CaScAdE" Rathje * |
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| 3 | * admiralcascade@gmail.com * |
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| 4 | * Project-URL: http://www.mylifesucks.de/oss/c-osd/ * |
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| 5 | * * |
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| 6 | * This program is free software; you can redistribute it and/or modify * |
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| 7 | * it under the terms of the GNU General Public License as published by * |
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| 8 | * the Free Software Foundation; either version 2 of the License. * |
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| 9 | * * |
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| 10 | * This program is distributed in the hope that it will be useful, * |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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| 13 | * GNU General Public License for more details. * |
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| 14 | * * |
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| 15 | * You should have received a copy of the GNU General Public License * |
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| 16 | * along with this program; if not, write to the * |
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| 17 | * Free Software Foundation, Inc., * |
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| 18 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
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| 19 | ****************************************************************************/ |
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| 20 | |||
| 507 | cascade | 21 | /* |
| 22 | * structs 'n union for easy SPI transfer |
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| 23 | */ |
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| 24 | typedef struct { |
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| 25 | int16_t ampere; |
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| 26 | int32_t mah; |
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| 27 | int16_t volt; |
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| 28 | } __attribute__((packed)) SPI_strom_data_t; |
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| 29 | |||
| 30 | typedef struct { |
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| 31 | uint8_t c[10]; |
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| 32 | uint8_t chk; |
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| 33 | } __attribute__((packed)) SPI_char_buffer_t; |
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| 34 | |||
| 35 | union SPI_buffer_t { |
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| 36 | SPI_strom_data_t data; |
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| 37 | SPI_char_buffer_t buffer; |
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| 38 | }; |
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| 39 | |||
| 40 | volatile union SPI_buffer_t SPI_buffer; |
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| 41 | |||
| 471 | cascade | 42 | /** |
| 43 | * SPI interrupt handler |
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| 44 | */ |
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| 45 | ISR(SPI_STC_vect); |
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| 46 | |||
| 47 | /** |
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| 48 | * init the SPI as master |
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| 49 | */ |
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| 50 | void SpiMasterInit(void); |
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| 51 | |||
| 52 | /** |
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| 53 | * check if SPI transfer is still busy |
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| 54 | */ |
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| 55 | int TransferIsBusy(void); |
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| 56 | |||
| 57 | /** |
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| 507 | cascade | 58 | * start a new transfer with length <len> |
| 471 | cascade | 59 | */ |
| 507 | cascade | 60 | void StartTransfer(uint16_t); |
| 61 | |||
| 62 | /** |
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| 63 | * send next command through spi |
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| 64 | */ |
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| 65 | void spi_send_next(); |