——From DWIN Developer Forum
In this issue, we push the award-winning open-source case of DWIN Developer Forum - Multi-function Weigher. The engineer adopts a 4-inch COF smart screen, and through the data interaction between T5L OS core and HX711 module and 5kg pressure sensor set, users can easily realize the counting display functions such as weight, unit price, total price, tare, etc., as well as the functions of counting, tracking of weight change curves, and correcting of weigher accuracy, etc., so that it is easy to switch between different application scenarios to enjoy a convenient and efficient weighing experience.
1. UI Development
2.C51 Design
Part of the reference code for the weigher to implement the pricing function is as follows:
// Pricing Page===================
#define VALUATION_UNIT_PRICE_ADDR 0x1010
#define VALUATION_GRAM_ADDR 0x1000
#define VALUATION_TOTAL_PRICES_ADDR 0x1020
uint32_t valuation_decorticate = 0; // Pricing Tare Weight
uint32_t valuation_unit_price = 0; //Unit Price
// Unit Price Refresh
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);
}
}
// Weight Refresh
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);
}
}
// Total Price Refresh
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();
}
Post time: Apr-28-2024