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- #include <Arduino.h>
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- #include "debug/printf.h"
- #undef printf
-
- size_t Print::write(const uint8_t *buffer, size_t size)
- {
- if (buffer == nullptr) return 0;
- size_t count = 0;
- while (size--) count += write(*buffer++);
- return count;
- }
-
-
- size_t Print::print(const String &s)
- {
- uint8_t buffer[33];
- size_t count = 0;
- unsigned int index = 0;
- unsigned int len = s.length();
- while (len > 0) {
- s.getBytes(buffer, sizeof(buffer), index);
- unsigned int nbytes = len;
- if (nbytes > sizeof(buffer)-1) nbytes = sizeof(buffer)-1;
- index += nbytes;
- len -= nbytes;
- count += write(buffer, nbytes);
- }
- return count;
- }
-
-
- size_t Print::print(long n)
- {
- uint8_t sign=0;
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- if (n < 0) {
- sign = '-';
- n = -n;
- }
- return printNumber(n, 10, sign);
- }
-
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- size_t Print::println(void)
- {
- uint8_t buf[2]={'\r', '\n'};
- return write(buf, 2);
- }
-
- extern "C" {
- __attribute__((weak))
- int _write(int file, char *ptr, int len)
- {
- ((class Print *)file)->write((uint8_t *)ptr, len);
- return len;
- }
- }
-
- int Print::printf(const char *format, ...)
- {
- va_list ap;
- va_start(ap, format);
- #ifdef __STRICT_ANSI__
- return 0;
- #else
- return vdprintf((int)this, format, ap);
- #endif
- }
-
- int Print::printf(const __FlashStringHelper *format, ...)
- {
- va_list ap;
- va_start(ap, format);
- #ifdef __STRICT_ANSI__
- return 0;
- #else
- return vdprintf((int)this, (const char *)format, ap);
- #endif
- }
-
- size_t Print::printNumber(unsigned long n, uint8_t base, uint8_t sign)
- {
- uint8_t buf[34];
- uint8_t digit, i;
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-
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- if (base == 0) {
- return write((uint8_t)n);
- } else if (base == 1) {
- base = 10;
- }
-
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- if (n == 0) {
- buf[sizeof(buf) - 1] = '0';
- i = sizeof(buf) - 1;
- } else {
- i = sizeof(buf) - 1;
- while (1) {
- digit = n % base;
- buf[i] = ((digit < 10) ? '0' + digit : 'A' + digit - 10);
- n /= base;
- if (n == 0) break;
- i--;
- }
- }
- if (sign) {
- i--;
- buf[i] = '-';
- }
- return write(buf + i, sizeof(buf) - i);
- }
-
- size_t Print::printFloat(double number, uint8_t digits)
- {
- uint8_t sign=0;
- size_t count=0;
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- if (isnan(number)) return print("nan");
- if (isinf(number)) return print("inf");
- if (number > 4294967040.0f) return print("ovf");
- if (number <-4294967040.0f) return print("ovf");
-
-
- if (number < 0.0) {
- sign = 1;
- number = -number;
- }
-
-
- double rounding = 0.5;
- for (uint8_t i=0; i<digits; ++i) {
- rounding *= 0.1;
- }
- number += rounding;
-
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- unsigned long int_part = (unsigned long)number;
- double remainder = number - (double)int_part;
- count += printNumber(int_part, 10, sign);
-
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- if (digits > 0) {
- uint8_t n, buf[16], count=1;
- buf[0] = '.';
-
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- if (digits > sizeof(buf) - 1) digits = sizeof(buf) - 1;
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- while (digits-- > 0) {
- remainder *= 10.0;
- n = (uint8_t)(remainder);
- buf[count++] = '0' + n;
- remainder -= n;
- }
- count += write(buf, count);
- }
- return count;
- }
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