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sersendf.c
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#include "sersendf.h"
/** \file sersendf.c
\brief Simplified printf implementation
*/
#include <stdarg.h>
#include <avr/pgmspace.h>
#include "serial.h"
#include "sermsg.h"
/// for sending hex data
// PGM_P str_ox = "0x";
// void sersendf(char *format, ...) {
// va_list args;
// va_start(args, format);
//
// uint16_t i = 0;
// uint8_t c, j = 0;
// while ((c = format[i++])) {
// if (j) {
// switch(c) {
// case 'l':
// j = 4;
// break;
// case 'u':
// if (j == 4)
// serwrite_uint32(va_arg(args, uint32_t));
// else
// serwrite_uint16(va_arg(args, uint16_t));
// j = 0;
// break;
// case 'd':
// if (j == 4)
// serwrite_int32(va_arg(args, int32_t));
// else
// serwrite_int16(va_arg(args, int16_t));
// j = 0;
// break;
// case 'p':
// case 'x':
// serial_writestr_P(str_ox);
// if (j == 4)
// serwrite_hex32(va_arg(args, uint32_t));
// else
// serwrite_hex16(va_arg(args, uint16_t));
// j = 0;
// break;
// case 'c':
// serial_writechar(va_arg(args, uint16_t));
// j = 0;
// break;
// case 's':
// serial_writestr(va_arg(args, uint8_t *));
// j = 0;
// break;
// default:
// serial_writechar(c);
// j = 0;
// break;
// }
// }
// else {
// if (c == '%') {
// j = 2;
// }
// else {
// serial_writechar(c);
// }
// }
// }
// va_end(args);
// }
/** \brief Simplified printf
\param format pointer to output format specifier string stored in FLASH.
\param ... output data
Implements only a tiny subset of printf's format specifiers :-
%[ls][udcx%]
l - following data is (32 bits)\n
s - following data is short (8 bits)\n
none - following data is 16 bits.
u - unsigned int\n
d - signed int\n
c - character\n
x - hex\n
% - send a literal % character
Example:
\code sersendf_P(PSTR("X:%ld Y:%ld temp:%u.%d flags:%sx Q%su/%su%c\n"), target.X, target.Y, current_temp >> 2, (current_temp & 3) * 25, dda.allflags, mb_head, mb_tail, (queue_full()?'F':(queue_empty()?'E':' '))) \endcode
*/
void sersendf_P(PGM_P format, ...) {
va_list args;
va_start(args, format);
uint16_t i = 0;
uint8_t c = 1, j = 0;
while ((c = pgm_read_byte(&format[i++]))) {
if (j) {
switch(c) {
case 's':
j = 1;
break;
case 'l':
j = 4;
break;
case 'u':
if (j == 4)
serwrite_uint32(va_arg(args, uint32_t));
else
serwrite_uint16(va_arg(args, uint16_t));
j = 0;
break;
case 'd':
if (j == 4)
serwrite_int32(va_arg(args, int32_t));
else
serwrite_int16(va_arg(args, int16_t));
j = 0;
break;
case 'c':
serial_writechar(va_arg(args, uint16_t));
j = 0;
break;
case 'x':
// serial_writestr_P(str_ox);
if (j == 4)
serwrite_hex32(va_arg(args, uint32_t));
else if (j == 1)
serwrite_hex8(va_arg(args, uint16_t));
else
serwrite_hex16(va_arg(args, uint16_t));
j = 0;
break;
/* case 'p':
serwrite_hex16(va_arg(args, uint16_t));*/
case 'q':
serwrite_int32_vf(va_arg(args, int32_t), 3);
j = 0;
break;
default:
serial_writechar(c);
j = 0;
break;
}
}
else {
if (c == '%') {
j = 2;
}
else {
serial_writechar(c);
}
}
}
va_end(args);
}