| Line No. | Rev | Author | Line |
|---|---|---|---|
| 1 | 6 | kaklik | //***************************************************************************** |
| 2 | // File Name : ads7828test.c |
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| 3 | // |
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| 4 | // Title : example usage of ADS7828 library functions |
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| 5 | // Revision : 1.0 |
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| 6 | // Notes : |
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| 7 | // Target MCU : Atmel AVR series |
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| 8 | // Editor Tabs : 4 |
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| 9 | // |
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| 10 | // Revision History: |
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| 11 | // When Who Description of change |
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| 12 | // ----------- ----------- ----------------------- |
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| 13 | // 20-Feb-2004 pstang Created the program |
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| 14 | //***************************************************************************** |
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| 15 | |||
| 16 | //----- Include Files --------------------------------------------------------- |
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| 17 | #include <avr/io.h> // include I/O definitions (port names, pin names, etc) |
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| 18 | #include <avr/interrupt.h> // include interrupt support |
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| 19 | |||
| 20 | #include "global.h" // include our global settings |
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| 21 | #include "uart.h" // include uart function library |
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| 22 | #include "rprintf.h" // include printf function library |
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| 23 | #include "timer.h" // include timer function library (timing, PWM, etc) |
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| 24 | #include "vt100.h" // include VT100 terminal support |
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| 25 | #include "i2c.h" // include i2c support |
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| 26 | #include "ads7828.h" // include ADS7828 support |
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| 27 | |||
| 28 | void ads7828test(void); |
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| 29 | |||
| 30 | //----- Begin Code ------------------------------------------------------------ |
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| 31 | int main(void) |
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| 32 | { |
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| 33 | // initialize our libraries |
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| 34 | // initialize the UART (serial port) |
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| 35 | uartInit(); |
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| 36 | uartSetBaudRate(115200); |
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| 37 | // make all rprintf statements use uart for output |
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| 38 | rprintfInit(uartSendByte); |
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| 39 | // initialize the timer system |
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| 40 | timerInit(); |
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| 41 | // clear terminal screen |
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| 42 | vt100ClearScreen(); |
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| 43 | vt100SetCursorPos(1,1); |
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| 44 | // print a little intro message so we know things are working |
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| 45 | rprintf("\r\nWelcome to ADS7828 test!\r\n"); |
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| 46 | |||
| 47 | // run tests |
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| 48 | ads7828test(); |
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| 49 | |||
| 50 | return 0; |
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| 51 | } |
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| 52 | |||
| 53 | |||
| 54 | void ads7828test(void) |
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| 55 | { |
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| 56 | u08 i; |
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| 57 | u16 conv=0; |
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| 58 | |||
| 59 | // initialize i2c function library |
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| 60 | i2cInit(); |
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| 61 | i2cSetBitrate(30); |
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| 62 | |||
| 63 | // initialize |
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| 64 | if(ads7828Init(ADS7828_I2C_ADDR)) |
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| 65 | { |
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| 66 | rprintf("ADS7828 detected and initialized!\r\n"); |
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| 67 | } |
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| 68 | else |
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| 69 | { |
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| 70 | rprintf("Cannot detect ADS7828!\r\n"); |
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| 71 | return; |
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| 72 | } |
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| 73 | |||
| 74 | // use the externally applied voltage on REF pin |
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| 75 | ads7828SetReference(0); |
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| 76 | // or use the internal 2.5V voltage reference |
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| 77 | //ads7828SetReference(1); |
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| 78 | |||
| 79 | while(1) |
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| 80 | { |
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| 81 | // position cursor |
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| 82 | vt100SetCursorPos(4,1); |
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| 83 | |||
| 84 | for(i=0; i<8; i++) |
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| 85 | { |
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| 86 | // convert |
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| 87 | conv = ads7828Convert(ADS7828_I2C_ADDR, i); |
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| 88 | // print results |
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| 89 | rprintf("CH#%d: Conversion result is: %d \r\n", i, conv-2048); |
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| 90 | } |
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| 91 | // pause between readings |
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| 92 | timerPause(100); |
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| 93 | } |
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| 94 | } |
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