86 lines
1.8 KiB
C++
86 lines
1.8 KiB
C++
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#include <XnodeUtil.h>
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char unpstr_buff[UNPSTR_BUFF_SIZE]; // buffer to copy progmem data into
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// Uncopy from program/flash memory to sram
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char* XnodeUtil::UNPSTR(const char* ptr) {
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for (uint8_t i = ZERO; i < UNPSTR_BUFF_SIZE; i++) {
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unpstr_buff[i] = '\0'; // clean buffer
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}
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uint8_t i = ZERO;
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uint8_t c = ZERO;
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do {
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c = pgm_read_byte(ptr++);
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unpstr_buff[i++] = c;
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} while (c != ZERO);
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return unpstr_buff;
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}
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// Fill pstr_buff from pointer
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char* XnodeUtil::UNPSTRA(const uint16_t* argu) {
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// rm readByte use word which auto size ptr
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uint8_t msb = pgm_read_byte((const char*) argu + 1);
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uint8_t lsb = pgm_read_byte((const char*) argu);
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const char*p = (const char*) ((msb * 256) + lsb);
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return UNPSTR(p);
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}
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uint8_t XnodeUtil::strcmp(char *s1, char *s2) {
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while (*s1 && *s2 && *s1 == *s2) {
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s1++;
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s2++;
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}
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if (*s1 == *s2) {
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return 0;
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}
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if (*s1 < *s2) {
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return -1;
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}
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return 1;
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}
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uint8_t XnodeUtil::strcmpP(char *s1, const char* s2) {
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return strcmp(s1, UNPSTR(s2));
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}
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void XnodeUtil::charsToByteA(char* input,byte* data, byte data_len) {
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for (byte i = ZERO; i < data_len; i++) {
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data[i] = ZERO; // clear array
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}
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byte charIdx = ZERO;
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for (byte i = ZERO; i < data_len; i++) {
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char c1 = input[charIdx];
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char c2 = input[charIdx + ONE];
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if (c1 == ZERO || c2 == ZERO) {
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break;
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}
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data[i] = charsToByte(c1, c2);
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charIdx++;
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charIdx++;
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}
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}
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byte XnodeUtil::charsToByte(char c1, char c2) {
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byte result = ZERO;
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result += charToNibble(c1) * 16;
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result += charToNibble(c2);
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return result;
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}
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byte XnodeUtil::charToNibble(char c) {
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uint8_t result = ZERO;
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if (c > '0' && c <= '9') {
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result = c - '0';
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} else if (c >= 'A' && c <= 'F') {
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result = c - 'A' + 10;
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}
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return result;
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}
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int XnodeUtil::freeRam() {
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extern int __heap_start, *__brkval;
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int v;
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return (int) &v - (__brkval == 0 ? (int) &__heap_start : (int) __brkval);
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}
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