SensorWireHelper.cpp

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#include "SensorBuildOpt.h"
#if !SENSORLIB_EXCLUDE_WIRE_HELPER
 
#include "SensorWireHelper.h"
 
#if defined(ARDUINO)
 
 
// regdump does not call Wire.begin, you need to call it before using regdump
int SensorWireHelper::regdump(TwoWire &w, Stream &serial, uint8_t devAddr, uint8_t start, uint8_t length)
{
    uint8_t *buffer =  (uint8_t *)malloc(length);
    if (!buffer) return -1;
    w.beginTransmission(devAddr);
    w.write(start);
    if (w.endTransmission() != 0) {
        free(buffer);
        return -1;
    }
    size_t len = w.requestFrom(devAddr, length);
    if (length != len) {
        free(buffer);
        return -1;
    }
    w.readBytes(buffer, length);
    hexdump(buffer, length, serial);
    free(buffer);
    return 0;
}
 
 
 
void SensorWireHelper::dumpDevices(TwoWire &w, Stream &serial, int first, int last)
{
    int i, j;
    int ret;
    serial.println("     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f");
    for (i = 0; i < 128; i += 16) {
        if (i < 16) {
            serial.print("0");
        }
        serial.print(i, HEX);
        serial.print(": ");
        for (j = 0; j < 16; j++) {
            /* Skip unwanted addresses */
            if (i + j < first || i + j > last) {
                serial.print("   ");
                continue;
            }
 
            w.beginTransmission(i + j);
            ret = w.endTransmission();
 
            if (ret != 0) {
                serial.print("-- ");
            } else {
                if (i < 16) {
                    serial.print("0");
                }
                serial.print(i + j, HEX);
                serial.print(" ");
            }
        }
        serial.println();
    }
}
 
 
void SensorWireHelper::hexdump(uint8_t *data, size_t len, Stream &serial)
{
    size_t rem_len = len;
    for (size_t i = 0; i < len; i += 16) {
        char str[80];
        snprintf(str, 80, "%07x  ", i);
        size_t line_len = 16;
        if (rem_len < line_len) {
            line_len = rem_len;
        }
        for (size_t j = 0; j < line_len; j++) {
            snprintf(&str[8 + j * 3], 80, "%02x ", data[i + j]);
        }
        for (size_t j = line_len; j < 16; j++) {
            snprintf(&str[8 + j * 3], 80, "   ");
        }
        str[56] = '|';
        str[57] = ' ';
        for (size_t j = 0; j < line_len; j++) {
            char c = data[i + j];
            if ((c < ' ') || (c > '~')) {
                c = '.';
            }
            snprintf(&str[58 + j], 80, "%c", c);
        }
        for (size_t j = line_len; j < 16; j++) {
            snprintf(&str[58 + j], 80, "   ");
        }
        serial.println(str);
        rem_len -= 16;
    }
}
 
 
 
#endif //ARDUINO
 
#endif