mirror of https://github.com/ArduPilot/ardupilot
40 lines
832 B
C
40 lines
832 B
C
#include <mavlink.h>
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#include <stdio.h>
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int main(int argc, char* argv[])
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{
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uint8_t bitfield = 254; // 11111110
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uint8_t mask = 128; // 10000000
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uint8_t result = (bitfield & mask);
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printf("0x%02x\n", bitfield);
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// Transform into network order
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generic_32bit bin;
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bin.i = 1;
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printf("First byte in (little endian) 0x%02x\n", bin.b[0]);
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generic_32bit bout;
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bout.b[0] = bin.b[3];
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bout.b[1] = bin.b[2];
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bout.b[2] = bin.b[1];
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bout.b[3] = bin.b[0];
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printf("Last byte out (big endian) 0x%02x\n", bout.b[3]);
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uint8_t n = 5;
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printf("Mask is 0x%02x\n", ((uint32_t)(1 << n)) - 1); // = 2^n - 1
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int32_t encoded = 2;
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uint8_t bits = 2;
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uint8_t packet[MAVLINK_MAX_PACKET_LEN];
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uint8_t packet_index = 0;
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uint8_t bit_index = 0;
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put_bitfield_n_by_index(encoded, bits, packet_index, bit_index, &bit_index, packet);
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}
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