Diff: main.cpp

Revision:

2:2616b6004345

Parent:

1:61f61158c345

Child:

3:6d221b7c12f2

--- a/main.cpp	Mon Mar 28 10:11:31 2022 +0000
+++ b/main.cpp	Mon May 23 19:14:54 2022 +0000
@@ -1,93 +1,49 @@
-/* 06_spi_max7219_led8x8
- *
- * Simple demo to drive a 8x8-as LED matrix by a MAX7219 LED driver IC
- * After initialisation two characters (H and W) are displayed alternatively.
- * The MAX7219 IC is driven by hardware SPI: SPI0 module at PTD1, PTD2, PTD3.
- */
+#include "mbed.h"
 
-#include "mbed.h"
-#include "lib_matrix.h"
+void SPI_Ecrire2Octets(unsigned char MSB, unsigned char LSB);
+void Init_MAX7219(void);
 
 SPI spi(D11,D12,D13);          // Arduino compatible MOSI, MISO, SCLK
 DigitalOut cs(D14);                // Chip select
-
+    // Programme principal
 int main()
 {
-    cs = 1;                         // CS initially High
+    cs.write(1);                    // CS initially High
     spi.format(8,0);                // 8-bit format, mode 0,0
     spi.frequency(1000000);         // SCLK = 1 MHz
     Init_MAX7219();                 // Initialize the LED controller
-    char tab[20]="HELLOWO&&&";
-    int i=0;
+        
     while (1) {
-        disp(tab[i]);
-        i=(i+1)%10;
-        wait(0.5);
-        disp(' ');
-        wait(0.1);        // 1 sec delay
+                                
 
     }
 }
+    // Pour envoyer 2 octets sur le bus SPI
+void SPI_Ecrire2Octets(unsigned char MSB, unsigned char LSB)
+{
+    // Ecrire ici le code de votre fonction
+}
 
-void disp(char c)
+    // initialisation du MAX7219 
+void Init_MAX7219(void)
 {
-    switch(c) {
-        case 'E' :
-            for(int i=1; i<9; i++)      // Write first character (8 rows)
-                SPI_Write2(i,led_E[i-1]);
-            break;
-        case 'H' :
-            for(int i=1; i<9; i++)      // Write first character (8 rows)
-                SPI_Write2(i,led_H[i-1]);
-            break;
-        case 'L' :
-            for(int i=1; i<9; i++)      // Write first character (8 rows)
-                SPI_Write2(i,led_L[i-1]);
-            break;
-        case 'O' :
-            for(int i=1; i<9; i++)      // Write first character (8 rows)
-                SPI_Write2(i,led_O[i-1]);
-            break;
-        case 'W' :                   // 1 sec delay
-            for(int i=1; i<9; i++)      // Write second character
-                SPI_Write2(i,led_W[i-1]);
-            break;
-        case ' ' :                   // 1 sec delay
-            for(int i=1; i<9; i++)      // Write second character
-                SPI_Write2(i,led_blank[i-1]);
-            break;
-        case '&' :                   // 1 sec delay
-            for(int i=1; i<9; i++)      // Write second character
-                SPI_Write2(i,led_heart[i-1]);
-            break;
+    for(int i=0; i<4; i++) {
+        SPI_Ecrire2Octets(0x09, 0x00);         // Decoding off
+        SPI_Ecrire2Octets(0x0A, 0x08);         // Brightness to intermediate
+        SPI_Ecrire2Octets(0x0B, 0x07);         // Scan limit = 7
+        SPI_Ecrire2Octets(0x0C, 0x01);         // Normal operation mode
+        SPI_Ecrire2Octets(0x0F, 0x0F);         // Enable display test
+        wait_ms(500);                   // 500 ms delay
+
+        SPI_Ecrire2Octets(0x01, 0x00);         // Clear row 0.
+        SPI_Ecrire2Octets(0x02, 0x00);         // Clear row 1.
+        SPI_Ecrire2Octets(0x03, 0x00);         // Clear row 2.
+        SPI_Ecrire2Octets(0x04, 0x00);         // Clear row 3.
+        SPI_Ecrire2Octets(0x05, 0x00);         // Clear row 4.
+        SPI_Ecrire2Octets(0x06, 0x00);         // Clear row 5.
+        SPI_Ecrire2Octets(0x07, 0x00);         // Clear row 6.
+        SPI_Ecrire2Octets(0x08, 0x00);         // Clear row 7.
+        SPI_Ecrire2Octets(0x0F, 0x00);         // Disable display test
+        wait_ms(500);                   // 500 ms delay
     }
 }
-/// Send two bytes to SPI bus
-void SPI_Write2(unsigned char MSB, unsigned char LSB)
-{
-    cs = 0;                         // Set CS Low
-    spi.write(MSB);                 // Send two bytes
-    spi.write(LSB);
-    cs = 1;                         // Set CS High
-}
-
-/// MAX7219 initialisation
-void Init_MAX7219(void)
-{
-    SPI_Write2(0x09, 0x00);         // Decoding off
-    SPI_Write2(0x0A, 0x08);         // Brightness to intermediate
-    SPI_Write2(0x0B, 0x07);         // Scan limit = 7
-    SPI_Write2(0x0C, 0x01);         // Normal operation mode
-    SPI_Write2(0x0F, 0x0F);         // Enable display test
-    wait_ms(500);                   // 500 ms delay
-    SPI_Write2(0x01, 0x00);         // Clear row 0.
-    SPI_Write2(0x02, 0x00);         // Clear row 1.
-    SPI_Write2(0x03, 0x00);         // Clear row 2.
-    SPI_Write2(0x04, 0x00);         // Clear row 3.
-    SPI_Write2(0x05, 0x00);         // Clear row 4.
-    SPI_Write2(0x06, 0x00);         // Clear row 5.
-    SPI_Write2(0x07, 0x00);         // Clear row 6.
-    SPI_Write2(0x08, 0x00);         // Clear row 7.
-    SPI_Write2(0x0F, 0x00);         // Disable display test
-    wait_ms(500);                   // 500 ms delay
-}