read accelerometer(LIS302DL) on STM32F4DISCOVERY ?

Not working.
It must be a reason for that ?

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echo(0); X= 0 Y= 0 X= 0 Y= 0 X= 0 Y= 0 X= 0 Y= 0 X= 0 Y= 0
=undefined X= 0 Y= 0

function onInit() {   SPI1.setup({ sck: A5, miso: A6, mosi: A7 , cs:
E3, int1: E0, int2:E1 } );   SPI1.send([0x20,0b01000111], E3); }

 var avrx=0.0, avry=0.0; function getAcc() {   var accx =
SPI1.send([0xA9,0], E3)[1];   var accy = SPI1.send([0xAB,0], E3)[1];  
 if (accx>127) accx-=256;   if (accy>127) accy-=256;   avrx = 0.1*accx
+ 0.9*avrx;   avry = 0.1*accy + 0.9*avry;   console.log("X= "+avrx+" Y= "+avry);    } onInit();

var t = setInterval(getAcc, 10); // clearInterval(t);