71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
#include "tools.h"
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char* uuid(){
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static char uuid_str[9];
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u32 time_stamp = HAL_GetTick();
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u32 random_part = rand();
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snprintf(uuid_str, 9, // 16 位 UUID（8 个字符 + 空终止符）
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"%04lX%04lX",
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(unsigned long)(time_stamp & 0xFFFF),
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(unsigned long)(random_part & 0xFFFF));
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return uuid_str;
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}
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void send_blocks(float* arr, char* uuid_str){
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// 按块处理 每个块的最大字符数（最多存储1000个浮点数的字符串）
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char* block = (char*) mymalloc(SRAMEX,sizeof(char)*100*100);
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memset(block, 0 ,sizeof(char)*100*100);
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int block_index = 0;
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int _total_len = 0;
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int total_len = 0;
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for (int i = 0; i < 100; ++i) {
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for (int j = 0; j < 100; ++j) {
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int n = snprintf(block + block_index, 100 * 100 - block_index, "%.6f|", arr[i * 100 + j]);
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block_index += n;
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if (block_index >= 5000) {
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block_index = 0; // 重置块
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_total_len++;
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}
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}
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}
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if (!block_index)_total_len--;
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block_index = 0;
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for (int i = 0; i < 100; ++i) {
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for (int j = 0; j < 100; ++j) {
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int n = snprintf(block + block_index, 100*100 - block_index, "%.6f|", arr[i*100+j]);
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block_index += n;
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if (block_index >= 5000) {
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char* _block = (char*) mymalloc(SRAMEX,sizeof(char)*100*100);
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memset(_block, 0 ,sizeof(char)*100*100);
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block_index = 0; // 重置块
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sprintf(_block, "{\\\"uuid\\\":\\\"%s\\\",\\\"Bid\\\":\\\"%d\\\",\\\"Eid\\\":\\\"%d\\\",\\\"Block\\\":\\\"%s\\\"}\n", uuid_str, total_len++, _total_len, block);
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//DEBUG_PRINTF("%s", _block);
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CSTX_4G_ALiYunIOTSenddata_string(_block,"data_string");
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myfree(SRAMEX,_block);
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_block = NULL;
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}
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}
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}
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// 输出最后一个块
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if (block_index > 0) {
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char* _block = (char*) mymalloc(SRAMEX,sizeof(char)*100*100);
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memset(_block, 0 ,sizeof(char)*100*100);
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block_index = 0;
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sprintf(_block, "{\\\"uuid\\\":\\\"%s\\\",\\\"Bid\\\":\\\"%d\\\",\\\"Eid\\\":\\\"%d\\\",\\\"Block\\\":\\\"%s\\\"}\n", uuid_str, total_len, _total_len, block);
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//DEBUG_PRINTF("%s", _block);
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CSTX_4G_ALiYunIOTSenddata_string(_block,"data_string");
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myfree(SRAMEX,_block);
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_block = NULL;
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}
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myfree(SRAMEX,block);
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block = NULL;
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}
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