Revision 3:24069293d35d, committed 2015-09-15

Comitter:

dujardin

Date:

Tue Sep 15 16:09:10 2015 +0000

Parent:

2:1d66e2e776bc

Child:

4:56b453735e89

Commit message:

base pour des projets de S3; IUT de cergy Neuville ; cr?ation : dujardin

Changed in this revision

--- a/main.cpp	Wed May 13 08:01:47 2015 +0000
+++ b/main.cpp	Tue Sep 15 16:09:10 2015 +0000
@@ -14,12 +14,28 @@
 #include "Arial28x28.h"
 #include "font_big.h"
 #include "diver.h"
-
+    PwmOut rled(LED_RED);    // init 
+    PwmOut gled(LED_GREEN);
+    PwmOut bled(LED_BLUE);
 SeeedStudioTFTv2 TFT(PTB3, PTB1, PTB2, PTB0, PTD2, PTD3, PTD1, PTA5, PTC8, PTC9, PTA4);
 
 
 int main()
 {
+    // init I2C accélero
+    uint8_t data[2] = {REG_CTRL_REG_1, 0x01};
+    i2c.write(MMA8451_I2C_ADDRESS,(char *)data,2);
+    
+     // initially set leds off
+  rled=1.0f;
+  gled=1.0f;
+  bled=1.0f;
+  // 1ms pwm frequency
+  rled.period(0.001f);
+  gled.period(0.001f);
+  bled.period(0.001f);
+  
+    
     //Configure l'afficheur TFT
     TFT.background(Black);
     TFT.foreground(White);
@@ -28,12 +44,12 @@
     //Print : message de bonjour
     TFT.set_font((unsigned char*) Arial28x28);
     TFT.locate(0,0);
-    TFT.printf("Bonjour la France  v1");
+    TFT.printf("Bonjour ");
 
-    //Wait for 5 seconds
-    wait(5.0);
+    //Wait for 1 seconds
+    wait(1.0);
 
-    //Draw some graphics
+    //Draw some graphics   // inutile sauf comme exemple de programmation 
     TFT.cls();
     TFT.set_font((unsigned char*) Arial24x23);
     TFT.locate(100,100);
@@ -55,23 +71,36 @@
         TFT.pixel(i, 100 + (int)s, Red);
     }
 
-    //Wait for 5 seconds
-    wait(5.0);
+    //Wait for 1 seconds
+    wait(1.0);
 
-    //Multiple fonts
+    //Multiple fonts // vous montre d'autres choses 
     TFT.foreground(White);
     TFT.background(Blue);
     TFT.cls();
     TFT.set_font((unsigned char*) Arial24x23);
     TFT.locate(0,0);
     TFT.printf("Different Fonts :");
-    TFT.set_font((unsigned char*) Neu42x35);
-    TFT.locate(0,30);
-    TFT.printf("Hello Mbed 1");
+
     TFT.set_font((unsigned char*) Arial24x23);
     TFT.locate(20,80);
     TFT.printf("Hello Mbed 2");
     TFT.set_font((unsigned char*) Arial12x12);
     TFT.locate(35,120);
     TFT.printf("Hello Mbed 3");
+    
+    while (true) {
+
+    float xaccln,yaccln;
+    xaccln=acclnread(REG_OUT_X_MSB);
+    yaccln=acclnread(REG_OUT_Y_MSB);
+  
+    TFT.locate(35,220);
+    TFT.printf("X: %1.4f, Y: %1.4f",  xaccln, yaccln );
+
+    wait(0.1f);
+
+
+  }
+    
 }

--- a/perso/diver.h	Wed May 13 08:01:47 2015 +0000
+++ b/perso/diver.h	Tue Sep 15 16:09:10 2015 +0000
@@ -1,40 +1,44 @@
-// pour le moment ce sont des choses inutiles
+
+// pour lecture I2C  accelerometre 
+   PinName const SDA = PTE25;
+   PinName const SCL = PTE24; 
+   I2C i2c(SDA,SCL);
+
+#define REG_WHO_AM_I      0x0D
+#define REG_CTRL_REG_1    0x2A
+#define REG_OUT_X_MSB     0x01
+#define REG_OUT_Y_MSB     0x03
+#define REG_OUT_Z_MSB     0x05
+
+#define MMA8451_I2C_ADDRESS (0x1d<<1)
+
+// #define UINT14_MAX        16383
+#define UINT14_MAX        16384
 
 
-/*#if defined(TARGET_LPC11U24)    //SEEEDUINO_ARCH
-#define PIN_XP          P0_14
-#define PIN_XM          P0_12
-#define PIN_YP          P0_13
-#define PIN_YM          P0_11
-#define PIN_MOSI        P1_22
-#define PIN_MISO        P1_21
-#define PIN_SCLK        P1_20
-#define PIN_CS_TFT      P1_24
-#define PIN_DC_TFT      P1_25
-#define PIN_BL_TFT      P1_5
-#define PIN_CS_SD       P1_18
-#elif defined(TARGET_LPC1768)   //SEEEDUINO_ARCH_PRO
-#define PIN_XP          P0_26
-#define PIN_XM          P0_24
-#define PIN_YP          P0_25
-#define PIN_YM          P0_23
-#define PIN_MOSI        P0_18
-#define PIN_MISO        P0_17
-#define PIN_SCLK        P0_15
-#define PIN_CS_TFT      P2_3
-#define PIN_DC_TFT      P2_4
-#define PIN_BL_TFT      P2_5
-#define PIN_CS_SD       P2_2
-#else //please redefine the following pins
-#define PIN_XP
-#define PIN_XM
-#define PIN_YP
-#define PIN_YM
-#define PIN_MOSI
-#define PIN_MISO
-#define PIN_SCLK
-#define PIN_CS_TFT
-#define PIN_DC_TFT
-#define PIN_BL_TFT
-#define PIN_CS_SD
-#endif*/
+static const float redx=0.0f;
+static const float redy=1.0f;
+static const float greenx=sqrt(3.0f)/2.0f;
+static const float greeny=-0.5f;
+static const float bluex=-sqrt(3.0f)/2.0f;
+static const float bluey=-0.5f;
+
+static const float twothirds=2.0f/3.0f;
+
+
+float acclnread(uint8_t reg)
+{
+  // Normalisation here seems wrong
+  char t[1]= {reg};
+  i2c.write(MMA8451_I2C_ADDRESS,t,1,true);
+  uint8_t xbits[2] = {0,0};
+  i2c.read(MMA8451_I2C_ADDRESS,(char *)xbits,2);
+  int16_t xint = 0;
+  xint=(xbits[0]<<6)|(xbits[1]>>2);
+  // this sign flip code looks wrong, UINT14_MAX maps to 0
+  // UINT14_MAX=16383, should it be UINT14_MAX=16384 
+  if (xint > UINT14_MAX>>1)
+    xint -= UINT14_MAX;
+  return float(xint)/4096.0f;
+  //  return float(xint);
+}