50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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extern "C" {
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#include "pb_decode.h"
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#include "pb_encode.h"
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#include "tm1638.pb.h"
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}
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bool callbackFont(pb_istream_t *stream, const pb_field_t *field, void **arg) {
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uint8_t buffer[256] = {0};
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int length = stream->bytes_left;
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if (length > sizeof(buffer) - 1) {
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return false;
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}
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if (!pb_read(stream, buffer, length)) {
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return false;
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}
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memset(*arg, 0, sizeof(buffer));
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strncpy((char*) *arg, (char*) buffer, length);
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return true;
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}
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int main() {
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FILE *fp = fopen("test.buffer", "r");
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int packet_size = fgetc(fp);
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uint8_t in_buffer[256];
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int bytes_read = fread((char*) in_buffer, 1, packet_size, fp);
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if (bytes_read != packet_size) {
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printf("length problem");
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return 1;
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}
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pb_istream_t istream = pb_istream_from_buffer(in_buffer, bytes_read);
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_tm1638_Command command;
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command.setDisplayToString.string.funcs.decode = &callbackFont;
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if (!pb_decode(&istream, tm1638_Command_fields, &command)) {
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printf("decode problem");
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return 1;
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}
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tm1638_SetDisplayToString setDisplayToString = command.setDisplayToString;
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char dots = setDisplayToString.dots;
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char pos = setDisplayToString.dots;
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printf("%s\n", setDisplayToString.string.arg);
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return 0;
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} |