Diff: main.cpp

Revision:

22:706708bc4c1a

Parent:

21:74482f23c8fe

Child:

23:262e3e171aaf

--- a/main.cpp	Fri Sep 01 17:41:34 2017 +0000
+++ b/main.cpp	Sun Sep 03 17:06:51 2017 +0000
@@ -1,52 +1,66 @@
 #include "mbed.h"    
-#include "MMA8452Q.h"
+//#include "MMA8452Q.h"
 
-Serial pc(USBTX, USBRX); // tx, rx
-SPI accel(p11,p12,p13);
-DigitalOut cs(p14);
+//Serial pc(USBTX, USBRX); // tx, rx
+//SPI accel(p11,p12,p13);
+//DigitalOut cs(p14);
 // Communication I2C
 //I2C comI2C(p9,p10); // sda, scl
 
+
+void UARTInit()
+{
+ uint16_t usFdiv;   
+    
+ // Power up the UART3 it's disabled on powerup.
+ LPC_SC->PCONP       |=  (1 << 25);
+ 
+  // Enable the pins on the device to use UART3 
+ LPC_PINCON->PINSEL1 |= (3 << 18);   /* Pin P0.25 used as TXD0 (Com0) */
+ LPC_PINCON->PINSEL1 |= (3 << 20);   /* Pin P0.26 used as RXD0 (Com0) */
+    
+ // Setup the PCLK for UART3
+ LPC_SC->PCLKSEL1    &= ~(3 << 18); // Clean all to 0
+ LPC_SC->PCLKSEL1    |=  (1 << 18); // PCLK = CCLK
+
+ // Word select 8-bit character length and set DLAB
+ LPC_UART3->LCR  =   0x83;  // 0000 0000 1000 0011
+
+ usFdiv = (SystemCoreClock / (16*9600));
+ LPC_UART3->DLM  =  usFdiv / 256;
+ LPC_UART3->DLL  =   usFdiv % 256;
+
+ //LPC_UART3->DLM  = ((SystemCoreClock / (16*9600))/256);
+ //LPC_UART3->DLL  = ((SystemCoreClock / (16*9600))%256);
+
+ // Enable and reset UART3 FIFOs.
+ LPC_UART3->FCR       = 0x7;
+ 
+  // Enable the interrupt
+ // NVIC_EnableIRQ(UART3_IRQn);
+ 
+ // Init the UART3 RX interrupt
+ // LPC_UART3->IER = 0x01;
+
+ // Clear DLAB
+ LPC_UART3->LCR &= ~(1 << 7);
+ 
+ //pc.printf("system clock : %d", SystemCoreClock);
+}
+
+char UART3Transmit(int out)
+{
+    LPC_UART3 -> THR = out;
+    while(! (LPC_UART3->LSR & (0x01 << 0x06)));
+
+    return 1;
+}
+
 int main() {
     
-    
- // Power up the UART3 it's disabled on powerup.
- LPC_SC->PCONP       |=  (1UL << 25);
-    
- // Setup the PCLK for UART3
- // LPC_SC->PCLKSEL1    &= ~(3UL << 18); // Clean
- LPC_SC->PCLKSEL1    |=  (1UL << 18); // PCLK = CCLK
-
- // Setup the baud rate for 9600
- LPC_UART3->LCR       = 0x80;  // LPC_UART3->LCR      |= (1UL << 7);
- LPC_UART3->DLM       = 0x2; 
- LPC_UART3->DLL       = 0x71;
- LPC_UART3->LCR       = 0x3;  // 8-bit character length
-
- // Enable the pins on the device to use UART3
- LPC_PINCON->PINSEL0 |= (3UL << 18);
- LPC_PINCON->PINSEL0 |= (3UL << 20);
+ UARTInit();
 
- // Enable and reset UART3 FIFOs.
- LPC_UART3->FCR       = 0x7;
-  
- // Enable the interrupt
- NVIC_EnableIRQ(UART3_IRQn);
- 
- // Init the UART3 RX interrupt
- LPC_UART3->IER = 0x01;
-
- LPC_UART3->LCR      &= ~(1UL << 7);
- 
- LPC_UART3->THR = 7;
- 
- /*
- while(LPC_UART3->THRE = 0)
- {
-     
- }
- */
-    
+ UART3Transmit(7);
     
     /*
      float x, y, z ;
@@ -146,16 +160,18 @@
     wait(1);
     }
 }*/
+ 
  /*
 Serial pc(USBTX, USBRX); // tx, rx
-Serial mc(p13,p14);
+Serial mc(p9,p10);
 int main() {
     
-    int nombre = 0;
+    int nombre;
     pc.printf("Entrez un nombre de 4 chiffres : ");
     pc.scanf("%d", &nombre);
     pc.printf("Votre numero entrez est le : %d", nombre);
-    mc.printf(nombre);
+    //mc.printf(nombre);
+    mc.putc(nombre);
 }
  */