Greg Steiert / Mbed 2 deprecated mURI_HTTPserver

This is a working HTTP server with I2C, GPIO and PWM commands accessible through URLs. It also includes the ability to serve files from an SD card.

Dependencies:   EthernetInterfaceMuri SDFileSystem mbed-rtos mbed

muri.cpp

Committer:
gsteiert
Date:
2013-09-07
Revision:
0:28bc7ce77e20
Child:
1:64f023138627

File content as of revision 0:28bc7ce77e20:

#include "mbed.h"
#include "muri.h"

I2C i2c(p28, p27);


void cmd_i2c_write(char* qry, char* data, char* resp)
{
    int addr = 0;
    int dlen = 0;
    int dtmp = 0;
    if (sscanf(qry, "?%2x", &addr) == 1) {
        qry += 3;
        while (sscanf(qry, "&%2x", &dtmp) == 1) {
            data[dlen] = dtmp;
            qry +=3;
            dlen +=1;
        }
    } else {
        dlen = -1;
    }
    if (dlen > 0 ) {
        i2c.write(addr, data, dlen);
        sprintf(resp,"200 %d\r\n", dlen);
    } else {
        if (dlen == 0) {
            sprintf(resp,"204 No data to write: %s\r\n", qry);
        } else {
            sprintf(resp,"400 Invalid parameters: %s\r\n", qry);

        }
    }
}

void cmd_i2c_read(char* qry, char* data, char* resp)
{
    int addr = 0;
    int dlen = 0;
    int dcnt = 0;
    if (sscanf(qry, "?%2x", &addr) == 1) {
        qry += 3;
        if (sscanf(qry, "&%2x", &dlen) == 1) {
            if (i2c.read(addr, data, dlen)!=0) {
                dlen = -1;
                sprintf(resp, "500 I2C read failed\r\n");
            }
        } else {
            sprintf(resp, "400 Invalid data length: %s\r\n", qry);
        }
    } else {
        dlen = -1;
        sprintf(resp, "400 Invalid address: %s\r\n", qry);
    }
    if (dlen > 0) {
        sprintf(resp,"200");
        resp += 3;
        for (dcnt = 0; dcnt < dlen; dcnt++) {
            sprintf(resp," %02x", data[dcnt]);
            resp +=3;
        }
    }
}

void cmd_i2c_addr_read(char* qry, char* data, char* resp)
{
    int addr = 0;
    int radd = 0;
    int dlen = 0;
    int dcnt = 0;
    if (sscanf(qry, "?%2x", &addr) == 1) {
        qry += 3;
        if (sscanf(qry, "&%2x", &radd) == 1) {
            qry += 3;
            if (sscanf(qry, "&%2x", &dlen) == 1) {
                data[0] = radd;
                i2c.write(addr, data, 1, false);
                if (i2c.read(addr, data, dlen)!=0) {
                    dlen = -1;
                    sprintf(resp, "500 I2C read failed\r\n");
                }
            } else {
                sprintf(resp, "400 Invalid data length: %s\r\n", qry);
            }
        } else {
            dlen = -1;
            sprintf(resp, "400 Invalid register address: %s\r\n", qry);
        }
    } else {
        dlen = -1;
        sprintf(resp, "400 Invalid address: %s\r\n", qry);
    }
    if (dlen > 0) {
        sprintf(resp,"200");
        resp += 3;
        for (dcnt = 0; dcnt < dlen; dcnt++) {
            sprintf(resp," %02x", data[dcnt]);
            resp +=3;
        }
    }
}


void muri(char* uri, char* data, char* resp)
{
//    sprintf(resp, "501 %s", uri);
//}
//void get_cgi(char* uri, char* qry)
//{
    char *qry;
    printf("muri uri:  %s\n", uri);
    qry = strstr(uri, "?");
    if (!strncmp(uri, "i2cw?", 5)) { // i2cW [addr] [data] [data] [data] ...
        cmd_i2c_write(qry, data, resp);
    } else if (!strncmp(uri, "i2cr?", 5)) { // i2cR [addr] [count]
        cmd_i2c_read(qry, data, resp);
    } else if (!strncmp(uri, "i2car?", 6)) { // i2cAR [addr] [radd] [count]
        cmd_i2c_addr_read(qry, data, resp);
    } else {
        sprintf(resp, "501 %s", uri);
    }
    printf("muri resp:  %s\n", resp);
}