mirror of https://github.com/m-labs/artiq.git
50 lines
964 B
C
50 lines
964 B
C
#include <stdarg.h>
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#include <stdio.h>
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#include <generated/csr.h>
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#include "log.h"
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static int buffer_index;
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static char buffer[LOG_BUFFER_SIZE];
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void log_va(const char *fmt, va_list args)
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{
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char outbuf[256];
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int i, len;
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len = vscnprintf(outbuf, sizeof(outbuf), fmt, args);
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for(i=0;i<len;i++) {
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buffer[buffer_index] = outbuf[i];
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buffer_index = (buffer_index + 1) % LOG_BUFFER_SIZE;
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}
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buffer[buffer_index] = '\n';
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buffer_index = (buffer_index + 1) % LOG_BUFFER_SIZE;
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#ifdef CSR_ETHMAC_BASE
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/* Since main comms are over ethernet, the serial port
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* is free for us to use. */
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puts(outbuf);
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#endif
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}
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void log(const char *fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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log_va(fmt, args);
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va_end(args);
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}
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void log_get(char *outbuf)
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{
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int i, j;
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j = buffer_index + 1;
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for(i=0;i<LOG_BUFFER_SIZE;i++) {
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outbuf[i] = buffer[j];
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j = (j + 1) % LOG_BUFFER_SIZE;
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}
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}
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