1 | #include "httpd.h"
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2 | #include "../lwip_v1.3.2/src/include/lwip/tcp.h"
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3 | #include "fs.h"
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4 |
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5 | #include <string.h>
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6 | #include <stdlib.h>
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7 |
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8 | tSSIHandler ADC_Page_SSI_Handler;
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9 |
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10 | /* we will use character "t" as tag for CGI */
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11 | char const* TAGCHAR="t";
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12 | char const** TAGS=&TAGCHAR;
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13 |
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14 | /* CGI handler for LED control */
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15 | const char * LEDS_CGI_Handler(int iIndex, int iNumParams, char *pcParam[], char *pcValue[]);
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16 |
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17 | /* Html request for "/Leds.cgi" will start LEDS_CGI_Handler */
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18 | const tCGI LEDS_CGI={"/Leds.cgi", LEDS_CGI_Handler};
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19 |
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20 | /* Cgi call table, only one CGI used */
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21 | tCGI CGI_TAB[1];
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22 |
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23 | char led=0;
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24 |
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25 | /**
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26 | * @brief Send_Value_Handler : SSI handler for Send value page
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27 | */
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28 | u16_t ADC_Handler(int iIndex, char *pcInsert, int iInsertLen)
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29 | {
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30 | /* We have only one SSI handler iIndex = 0 */
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31 | if (iIndex ==0)
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32 | {
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33 | char Digit1=0, Digit2=0, Digit3=0, Digit4=0;
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34 | unsigned long ADCVal = 0x1234; // Beispielwert - ADC wurde hier deaktiviert bzw. nicht verwendet
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35 |
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36 | /* convert to Voltage, step = 0.8 mV */
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37 | ADCVal = (unsigned long)(ADCVal * 0.8);
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38 |
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39 | /* get digits to display */
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40 |
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41 | Digit1= ADCVal/1000;
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42 | Digit2= (ADCVal-(Digit1*1000))/100 ;
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43 | Digit3= (ADCVal-((Digit1*1000)+(Digit2*100)))/10;
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44 | Digit4= ADCVal -((Digit1*1000)+(Digit2*100)+ (Digit3*10));
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45 |
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46 | /* prepare data to be inserted in html */
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47 | *pcInsert = (char)(Digit1+0x30);
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48 | *(pcInsert + 1) = (char)(Digit2+0x30);
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49 | *(pcInsert + 2) = (char)(Digit3+0x30);
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50 | *(pcInsert + 3) = (char)(Digit4+0x30);
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51 |
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52 | /* 4 characters need to be inserted in html*/
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53 | return 4;
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54 | }
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55 | return 0;
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56 | }
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57 |
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58 | /**
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59 | * @brief CGI handler for LEDs control
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60 | */
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61 | const char * LEDS_CGI_Handler(int iIndex, int iNumParams, char *pcParam[], char *pcValue[])
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62 | {
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63 | unsigned long i=0;
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64 |
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65 | /* We have only one SSI handler iIndex = 0 */
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66 | if (iIndex==0)
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67 | {
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68 | /* Check cgi parameter : example GET /leds.cgi?led=2&led=4 */
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69 | for (i=0; i<iNumParams; i++)
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70 | {
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71 | /* check parameter "led" */
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72 | if (strcmp(pcParam[i] , "led")==0)
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73 | {
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74 | /* switch led1 ON if 1 */
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75 | if(strcmp(pcValue[i], "1") ==0)
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76 | led = 1;
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77 |
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78 | /* switch led2 ON if 2 */
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79 | else if(strcmp(pcValue[i], "2") ==0)
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80 | led = 2;
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81 |
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82 | /* switch led3 ON if 3 */
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83 | else if(strcmp(pcValue[i], "3") ==0)
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84 | led = 3;
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85 | }
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86 | }
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87 | }
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88 | /* uri to send after cgi call*/
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89 | return "/index.html";
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90 | }
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91 |
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92 | /**
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93 | * Initialize SSI handlers
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94 | */
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95 | void httpd_ssi_init(void)
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96 | {
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97 | /* configure SSI handlers (Send value page SSI) */
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98 | http_set_ssi_handler(ADC_Handler, (char const **)TAGS, 1);
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99 | }
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100 |
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101 | /**
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102 | * Initialize CGI handlers
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103 | */
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104 | void httpd_cgi_init(void)
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105 | {
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106 | /* configure CGI handlers (LEDs control CGI) */
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107 | CGI_TAB[0] = LEDS_CGI;
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108 | http_set_cgi_handlers(CGI_TAB, 1);
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109 | }
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