MM32F103 digital tube dynamic drive demonstration

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MM32F103 digital tube dynamic drive demonstration [Copy link]

The MM32F103 digital tube dynamic drive demonstration is relatively simple, so I won't explain it in detail. In addition, the current of the 96Mhz microcontroller running at full speed was tested. It was about 13.5mA at 5V. It could not be measured with a multimeter at 3.3V. It should be that the interference of the test leads was too large, and the microcontroller could not start normally.

1. #include "delay.h" #include "sys.h" #include "led.h" #include "key.h" #include "uart.h" #include "uart_nvic.h" #include<stdio.h>
2. #include <unistd.h>
4. void LED_display(uint16_t data); void LED_c(uint16_t data); void LED_4(void); void LED_5(void); void LED_6(void); uint8_t LED_buffer[4] = { 0xa1 }; int _write(int32_t fd, char* ptr, int32_t len) { if (fd == STDOUT_FILENO || fd == STDERR_FILENO) { int32_t i = 0; while (i &lt; len) { while (UART_GetFlagStatus(UART1, UART_IT_TXIEN) == RESET) ; UART_SendData(UART1, (uint8_t) ptr[i++]); } } return len; } uint16_t dis_buffer[3] = { 0 }; int main(void) { u8 t = 0; u8 len; u16 times = 0; delay_init(); //delay function initialization LED_Init(); //initialize the hardware interface connected to the LED // KEY_Init(); //initialize the hardware interface connected to the key LED2 = 0; //Turn on the LED // uart_initwBaudRate(115200u); NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //Set interrupt priority group 2 uart_nvic_init(115200); //Initialize the serial port to 115200 while (1) { // t=KEY_Scan(0 ); //Get the key value if (UART_RX_STA &amp; 0x8000) { len = UART_RX_STA &amp; 0x3fff; //Get the length of the data received this time printf("\r\n your message is \r\n"); for (t = 0; t &lt; len; t++) { while (UART_GetFlagStatus(UART1, UART_IT_TXIEN) == RESET) ; UART_SendData(UART1, (u8) UART_RX_BUF[t]); } printf("\r\n\r\n"); //Insert newline UART_RX_STA = 0; } else { times++; if (times % 50 == 0) { printf("\r\n Serial port test\r\n"); dis_buffer[0] = (times / 50) % 10; dis_buffer[1] = (times / 50) % 10; dis_buffer[2] = (times / 50) % 10; dis_buffer[3] = (times / 50) % 10; // delay_ms(10); } if (times % 200 == 0) printf("please input date\r\n"); if (times % 30 == 0) LED2 = !LED2; //Flash LED to indicate that the system is running. } LED_4(); // LED_6(); } } void LED_display(uint16_t data ) { switch (data) { case 0: led_a = !1; led_b = !1; led_c = !1; led_d = !1; led_e = !1; led_f = !1; led_g = !0; led_dp = !0; break; case 1: led_a = !0; led_b = !1; led_c = !1; led_d = !0; led_e = !0; led_f = !0; led_g = !0; led_dp = !0; break; case 2: led_a = !1; led_b = !1; led_c = !0; led_d = !1; led_e = !1; led_f = !0; led_g = !1; led_dp = !0; break; case 3: led_a = !1; led_b = !1; led_c = !1; led_d = !1; led_e = !0; led_f = !0; led_g = !1; led_dp = !0; break; case 4: led_a = !0; led_b = !1; led_c = !1; led_d = !0; led_e = !0; led_f = !1; led_g = !1; led_dp = !0; break; case 5: led_a = ! 1; led_b = !0; led_c = !1; led_d = !1; led_e = !0; led_f = !1; led_g = !1; led_dp = !0; break; case 6: led_a = !1; led_b = !0; led_c = !1; led_d = !1; led_e = !1; led_f = !1; led_g = !1; led_dp = !0; break; case 7: led_a = !1; led_b = !1; led_c = !1; led_d = !0; led_e = !0; led_f = !0; led_g = !0; led_dp = !0; break; case 8: led_a = !1; led_b = !1; led_c = !1; led_d = !1; led_e = !1; led_f = !1; led_g = !1; led_dp = !0; break; case 9: led_a = !1; led_b = !1; led_c = !1; led_d = !1; led_e = !0; led_f = !1; led_g = !1; led_dp = !0;
5.                 break;
7.         default:
8.                 break;
10.         }
12.         return;
13. }
14. void LED_c(uint16_t data) {
15.         switch (data) {
16.         case 0:
17.                 led_c1 = 0;
18.                 led_c2 = 1;
19.                 led_c3 = 1;
20.                 led_c4 = 1;
21.                 break;
22.         case 1:
23.                 led_c1 = 1;
24.                 led_c2 = 0;
25.                 led_c3 = 1;
26.                 led_c4 = 1;
27.                 break;
28.         case 2:
29.                 led_c1 = 1;
30.                 led_c2 = 1;
31.                 led_c3 = 0;
32.                 led_c4 = 1;
33.                 break;
35.         case 3:
36.                 led_c1 = 1;
37.                 led_c2 = 1;
38.                 led_c3 = 1;
39.                 led_c4 = 0;
40.                 break;
41.         default:
42.                 led_c1 = 1;
43.                 led_c2 = 1;
44.                 led_c3 = 1;
45.                 led_c4 = 1;
46.                 break;
48.         }
49.         return;
50. }
52. void LED_4(void) {
54.         uint16_t i;
55.         for (i = 0; i &lt; 4; i++) {
56.                 LED_c(i);
57.                 LED_display(dis_buffer[i]);
58.                 delay_ms(2);
59.         }
60. //        LED_c(i);
61.         return;
62. }
64. void LED_5(void) {
65.         int i;
66.         for (i = 0; i &lt; 1; i++) {
67.                 led_a = !((LED_buffer[0] &gt;&gt; 0) &amp; 0x01);
68.                 delay_ms(2);
69.                 led_b = !((LED_buffer[0] &gt;&gt; 1) &amp; 0x01);
70.                 delay_ms(2);
71.                 led_c = !((LED_buffer[0] &gt;&gt; 2) &amp; 0x01);
72.                 delay_ms(2);
73.                 led_d = !((LED_buffer[0] &gt;&gt; 3) &amp; 0x01);
74.                 delay_ms(2);
75.                 led_e = !((LED_buffer[0] &gt;&gt; 4) &amp; 0x01);
76.                 delay_ms(2);
77.                 led_f = !((LED_buffer[0] &gt;&gt; 5) &amp; 0x01);
78.                 delay_ms(2);
79.                 led_g = !((LED_buffer[0] &gt;&gt; 6) &amp; 0x01);
80.                 delay_ms(2);
81.         }
83. }
85. void LED_6(void) {
87.         uint16_t i;
88.         for (i = 0; i &lt; 4; i++) {
89.                 LED_c(i);
90. //                LED_display(dis_buffer[i]);
91.                 LED_5();
92.                 delay_ms(2);
93.         }
94. //        LED_c(i);
95.         return;
96. }

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