——來自迪文開發者論壇

本期為大家推送迪文開發者論壇獲獎開源案例——多功能稱重器。工程師采用4英寸COF智能屏，通過T5L OS核與HX711模塊及5kg壓力傳感器套裝進行數據交互，用戶可輕松實現重量、單價、總價、去皮等計價顯示功能，以及計數、重量變化曲線跟蹤和稱重器精準度矯正等功能，輕松切換不同應用場景，享受便捷高效稱重體驗。

UI開發示例

C51工程設計 稱重器實現計價功能的部分參考代碼如下：

//計價頁面===================#define VALUATION_UNIT_PRICE_ADDR 0x1010#define VALUATION_GRAM_ADDR 0x1000#define VALUATION_TOTAL_PRICES_ADDR 0x1020uint32_t valuation_decorticate = 0; //計價去皮重量uint32_t valuation_unit_price = 0; //單價//單價刷新void page_valuation_unit_price_refresh(){ uint8_t test_display[10] = {0}; if(valuation_unit_price < 1000) { test_display[0] = valuation_unit_price / 100 % 10 + 0x30; test_display[1] = '.'; test_display[2] = valuation_unit_price / 10 % 10 + 0x30; test_display[3] = valuation_unit_price / 1 % 10 + 0x30; dgus_show_text_value_set(VALUATION_UNIT_PRICE_ADDR, test_display, 4); } else if(valuation_unit_price < 10000) { test_display[0] = valuation_unit_price / 1000 % 10 + 0x30; test_display[1] = valuation_unit_price / 100 % 10 + 0x30; test_display[2] = '.'; test_display[3] = valuation_unit_price / 10 % 10 + 0x30; test_display[4] = valuation_unit_price / 1 % 10 + 0x30; dgus_show_text_value_set(VALUATION_UNIT_PRICE_ADDR, test_display, 4); } else if(valuation_unit_price < 100000) { test_display[0] = valuation_unit_price / 10000 % 10 + 0x30; test_display[1] = valuation_unit_price / 1000 % 10 + 0x30; test_display[2] = valuation_unit_price / 100 % 10 + 0x30; test_display[3] = '.'; test_display[4] = valuation_unit_price / 10 % 10 + 0x30; test_display[5] = valuation_unit_price / 1 % 10 + 0x30; dgus_show_text_value_set(VALUATION_UNIT_PRICE_ADDR, test_display, 4); } else if(valuation_unit_price < 1000000) { test_display[0] = valuation_unit_price / 100000 % 10 + 0x30; test_display[1] = valuation_unit_price / 10000 % 10 + 0x30; test_display[2] = valuation_unit_price / 1000 % 10 + 0x30; test_display[3] = valuation_unit_price / 100 % 10 + 0x30; test_display[4] = '.'; test_display[5] = valuation_unit_price / 10 % 10 + 0x30; test_display[6] = valuation_unit_price / 1 % 10 + 0x30; dgus_show_text_value_set(VALUATION_UNIT_PRICE_ADDR, test_display, 4); }}
//重量刷新void page_valuation_weight_refresh(){ uint8_t test_display[10] = {0x30}; uint32_t gram_display = 0; if(gram_value >= valuation_decorticate) { gram_display = gram_value - valuation_decorticate; if(gram_display < 10) { test_display[0] = gram_display / 1 % 10 + 0x30; dgus_show_text_value_set(VALUATION_GRAM_ADDR, test_display, 3); } else if(gram_display < 100) { test_display[0] = gram_display / 10 % 10 + 0x30; test_display[1] = gram_display / 1 % 10 + 0x30; dgus_show_text_value_set(VALUATION_GRAM_ADDR, test_display, 3); } else if(gram_display < 1000) { test_display[0] = gram_display / 100 % 10 + 0x30; test_display[1] = gram_display / 10 % 10 + 0x30; test_display[2] = gram_display / 1 % 10 + 0x30; dgus_show_text_value_set(VALUATION_GRAM_ADDR, test_display, 3); } else if(gram_display < 10000) { test_display[0] = gram_display / 1000 % 10 + 0x30; test_display[1] = gram_display / 100 % 10 + 0x30; test_display[2] = gram_display / 10 % 10 + 0x30; test_display[3] = gram_display / 1 % 10 + 0x30; dgus_show_text_value_set(VALUATION_GRAM_ADDR, test_display, 3); } else if(gram_display < 100000) { test_display[0] = gram_display / 10000 % 10 + 0x30; test_display[1] = gram_display / 1000 % 10 + 0x30; test_display[2] = gram_display / 100 % 10 + 0x30; test_display[3] = gram_display / 10 % 10 + 0x30; test_display[4] = gram_display / 1 % 10 + 0x30; dgus_show_text_value_set(VALUATION_GRAM_ADDR, test_display, 3); } } else { dgus_show_text_value_set(VALUATION_GRAM_ADDR, test_display, 3); }}
//總價刷新void page_valuation_price_refresh(){ uint32_t price_value = 0; uint8_t test_display[10] = {0x30, '.', 0x30, 0x30}; if(gram_value >= valuation_decorticate) { price_value = (gram_value - valuation_decorticate) * valuation_unit_price * 2 / 1000; if(price_value < 1000) { test_display[0] = price_value / 100 % 10 + 0x30; test_display[1] = '.'; test_display[2] = price_value / 10 % 10 + 0x30; test_display[3] = price_value / 1 % 10 + 0x30; dgus_show_text_value_set(VALUATION_TOTAL_PRICES_ADDR, test_display, 4); } else if(price_value < 10000) { test_display[0] = price_value / 1000 % 10 + 0x30; test_display[1] = price_value / 100 % 10 + 0x30; test_display[2] = '.';

test_display[3] = price_value / 10 % 10 + 0x30; test_display[4] = price_value / 1 % 10 + 0x30; dgus_show_text_value_set(VALUATION_TOTAL_PRICES_ADDR, test_display, 4); } else if(price_value < 100000)

{ test_display[0] = price_value / 10000 % 10 + 0x30; test_display[1] = price_value / 1000 % 10 + 0x30; test_display[2] = price_value / 100 % 10 + 0x30; test_display[3] = '.'; test_display[4] = price_value / 10 % 10 + 0x30; test_display[5] = price_value / 1 % 10 + 0x30; dgus_show_text_value_set(VALUATION_TOTAL_PRICES_ADDR, test_display, 4);

} else if(price_value < 1000000) { test_display[0] = price_value / 100000 % 10 + 0x30; test_display[1] = price_value / 10000 % 10 + 0x30; test_display[2] = price_value / 1000 % 10 + 0x30; test_display[3] = price_value / 100 % 10 + 0x30; test_display[4] = '.'; test_display[5] = price_value / 10 % 10 + 0x30; test_display[6] = price_value / 1 % 10 + 0x30; dgus_show_text_value_set(VALUATION_TOTAL_PRICES_ADDR, test_display, 4); } } else { dgus_show_text_value_set(VALUATION_TOTAL_PRICES_ADDR, test_display, 4); }}void page_valuation_decorticate(){ valuation_decorticate = gram_value; page_valuation_weight_refresh();}void page_valuation_1(){ if(valuation_unit_price < 100000) { valuation_unit_price = valuation_unit_price * 10 + 1; page_valuation_unit_price_refresh(); }}void page_valuation_2(){ if(valuation_unit_price < 100000) { valuation_unit_price = valuation_unit_price * 10 + 2; page_valuation_unit_price_refresh(); }}void page_valuation_3(){ if(valuation_unit_price < 100000) { valuation_unit_price = valuation_unit_price * 10 + 3; page_valuation_unit_price_refresh(); }}void page_valuation_4(){ if(valuation_unit_price < 100000) { valuation_unit_price = valuation_unit_price * 10 + 4; page_valuation_unit_price_refresh(); }}

void page_valuation_5(){ if(valuation_unit_price < 100000) { valuation_unit_price = valuation_unit_price * 10 + 5; page_valuation_unit_price_refresh(); }}void page_valuation_6(){ if(valuation_unit_price < 100000) { valuation_unit_price = valuation_unit_price * 10 + 6; page_valuation_unit_price_refresh(); }}void page_valuation_7(){ if(valuation_unit_price < 100000) { valuation_unit_price = valuation_unit_price * 10 + 7; page_valuation_unit_price_refresh(); }}void page_valuation_8(){ if(valuation_unit_price < 100000) { valuation_unit_price = valuation_unit_price * 10 + 8; page_valuation_unit_price_refresh(); }}void page_valuation_9(){ if(valuation_unit_price < 100000) { valuation_unit_price = valuation_unit_price * 10 + 9; page_valuation_unit_price_refresh(); }}void page_valuation_0(){ if(valuation_unit_price < 100000) { valuation_unit_price = valuation_unit_price * 10 + 0; page_valuation_unit_price_refresh(); }}void page_valuation_back(){ valuation_unit_price = valuation_unit_price / 10; page_valuation_unit_price_refresh();}void page_valuation_clear(){ valuation_unit_price = 0; page_valuation_unit_price_refresh();}