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1 | 6 | kaklik | //***************************************************************************** |
2 | // File Name : ds1631test.c |
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3 | // |
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4 | // Title : example usage of DS1631 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 "ds1631.h" // include DS1631 support |
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27 | |||
28 | void ds1631test(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 DS6131 test!\r\n"); |
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46 | |||
47 | // run tests |
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48 | ds1631test(); |
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49 | |||
50 | return 0; |
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51 | } |
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52 | |||
53 | |||
54 | void ds1631test(void) |
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55 | { |
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56 | s16 T=0; |
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57 | |||
58 | // initialize i2c function library |
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59 | i2cInit(); |
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60 | i2cSetBitrate(100); |
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61 | |||
62 | // initialize |
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63 | if(ds1631Init(DS1631_I2C_ADDR)) |
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64 | { |
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65 | rprintf("DS1631 detected and initialized!\r\n"); |
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66 | } |
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67 | else |
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68 | { |
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69 | rprintf("Cannot detect DS1631!\r\n"); |
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70 | return; |
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71 | } |
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72 | |||
73 | // set config |
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74 | ds1631SetConfig(DS1631_I2C_ADDR, 0x0F); |
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75 | // set the temperature limit registers |
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76 | ds1631SetTH(DS1631_I2C_ADDR, 35<<8); |
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77 | ds1631SetTL(DS1631_I2C_ADDR, 30<<8); |
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78 | // read them back for verification |
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79 | rprintf("TH is set to: %d\r\n",ds1631GetTH(DS1631_I2C_ADDR)>>8); |
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80 | rprintf("TL is set to: %d\r\n",ds1631GetTL(DS1631_I2C_ADDR)>>8); |
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81 | |||
82 | while(1) |
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83 | { |
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84 | // start convert |
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85 | ds1631StartConvert(DS1631_I2C_ADDR); |
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86 | // wait until done |
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87 | // this works but seems to take forever (5-10 seconds) |
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88 | //while(!(ds1631GetConfig(DS1631_I2C_ADDR) & DS1631_CONFIG_DONE)); |
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89 | // 12-bit conversion are only suppored to take this long |
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90 | timerPause(750); |
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91 | |||
92 | // read temp |
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93 | T = ds1631ReadTemp(DS1631_I2C_ADDR); |
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94 | |||
95 | |||
96 | // Print the raw temperature reading |
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97 | rprintf("Raw Temp: %d ", T); |
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98 | // Print the formatted temperature reading |
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99 | rprintf("Real Temp is: "); |
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100 | rprintfNum(10, 4, TRUE , ' ', T>>8); |
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101 | rprintf("."); |
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102 | rprintfNum(10, 4, FALSE, '0', (10000*((u32)(T&0x00FF)))/256 ); |
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103 | rprintf(" degrees C\r\n"); |
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104 | |||
105 | timerPause(50); |
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106 | } |
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107 | } |
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