Hardware Design: SIE
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| 1 | /* ADC Peripheral.h |
| 2 | |
| 3 | Copyright (C) 2010 Carlos Camargo cicamargoba@unal.edu.co |
| 4 | Andres Calderon andres.calderon@emqbit.com |
| 5 | |
| 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 |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ |
| 19 | |
| 20 | #ifndef __adc_peripheral_h__ |
| 21 | #define __adc_peripheral_h__ |
| 22 | |
| 23 | #include "jz47xx_mmap.h" |
| 24 | |
| 25 | #define ADC_CMD_NONE 0x00 /* Nothing to do */ |
| 26 | #define ADC_CMD_SET_SPI_CLKDIV 0x00 /* Set clock divider for ADC sclk */ |
| 27 | #define ADC_CMD_SET_BUFFER_SIZE 0x00 /* Set clock divider for ADC sclk */ |
| 28 | |
| 29 | #define ADC_CMD_SET_CHANNEL0 0x30 /* Set channel 0 */ |
| 30 | #define ADC_CMD_READ_CHANNEL0 0x20 /* Read channel 0 */ |
| 31 | |
| 32 | #define ADC_CMD_SET_CHANNEL1 0x31 /* Set channel 1 */ |
| 33 | #define ADC_CMD_READ_CHANNEL1 0x21 /* Read channel 1 */ |
| 34 | |
| 35 | #define ADC_CMD_SET_CHANNEL2 0x32 /* Set channel 2 */ |
| 36 | #define ADC_CMD_READ_CHANNEL2 0x22 /* Read channel 2 */ |
| 37 | |
| 38 | #define ADC_CMD_SET_CHANNEL3 0x33 /* Set channel 3 */ |
| 39 | #define ADC_CMD_READ_CHANNEL3 0x23 /* Read channel 3 */ |
| 40 | |
| 41 | #define ADC_CMD_SET_CHANNEL4 0x34 /* Set channel 4 */ |
| 42 | #define ADC_CMD_READ_CHANNEL4 0x24 /* Read channel 4 */ |
| 43 | |
| 44 | #define ADC_CMD_SET_CHANNEL5 0x35 /* Set channel 5 */ |
| 45 | #define ADC_CMD_READ_CHANNEL5 0x25 /* Read channel 5 */ |
| 46 | |
| 47 | #define ADC_CMD_SET_CHANNEL6 0x36 /* Set channel 6 */ |
| 48 | #define ADC_CMD_READ_CHANNEL6 0x26 /* Read channel 6 */ |
| 49 | |
| 50 | #define ADC_CMD_SET_CHANNEL7 0x37 /* Set channel 7 */ |
| 51 | #define ADC_CMD_READ_CHANNEL7 0x27 /* Read channel 8 */ |
| 52 | |
| 53 | #define ADC_CMD_SET_POWER_DOWN 0X38 /* Set ADC power down mode (1uA) */ |
| 54 | |
| 55 | #define ADC_CMD_SET_FAST_CONV 0X39 /* Initialize ADC Fast Convertion(<10us)*/ |
| 56 | |
| 57 | #define ADC_CMD_SET_LOW_CONV 0X3A /* Initialize ADC Slow Convertion(<40us)*/ |
| 58 | |
| 59 | #define ADC_CMD_SET_AUTOSELFT_1 0x3B /* Set Autoselft ADC {(Vref+)-(Vref-)}/2*/ |
| 60 | #define ADC_CMD_READ_AUTOSELFT_1 0x2B /* Read Autoselft ADC 1 (0x0200) */ |
| 61 | |
| 62 | #define ADC_CMD_SET_AUTOSELFT_2 0x3C /* Set Autoselft ADC (Vref-) */ |
| 63 | #define ADC_CMD_READ_AUTOSELFT_2 0x2C /* Read Autoselft ADC 2 (0x0000) */ |
| 64 | |
| 65 | #define ADC_CMD_SET_AUTOSELFT_3 0x3D /* Set Autoselft ADC (Vref+) */ |
| 66 | #define ADC_CMD_READ_AUTOSELFT_3 0x2D /* Read Autoselft ADC 3 (0x03FF) */ |
| 67 | |
| 68 | #define ADC_SPI_CLKDIV_MIN 0x08 /* 50/(2*9) -> 2.78MHz (MAX=2.8MHz) */ |
| 69 | #define ADC_SPI_CLKDIV_MAX 0xFF /* 50/(2*256) -> 97.65KHz */ |
| 70 | |
| 71 | #define ADC_MAX_BUFFER 0x3FE/* 1022 reads/commands */ |
| 72 | |
| 73 | |
| 74 | typedef unsigned char uchar; |
| 75 | |
| 76 | void ADCTest(); |
| 77 | void ADCPowerDown(); |
| 78 | JZ_REG * ADCTakeSamples(int CHANNEL); |
| 79 | void ADCConfig(uchar CMD); |
| 80 | int ADCCheckBufferFull(); |
| 81 | |
| 82 | uchar ADC_SPI_CLKDIV; |
| 83 | int ADC_BUFFER_LEN; |
| 84 | int ADC_BUFFER_OFFSET; |
| 85 | uchar ADC_MUX_CHANNELS; |
| 86 | |
| 87 | #endif |
| 88 |
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