Diff: DeviceSSP.c

Revision:

156:e68ee0bcdcda

Parent:

149:abbf7663d27d

Child:

166:c3c0b8a90d81

--- a/DeviceSSP.c	Fri May 06 14:08:54 2016 +0000
+++ b/DeviceSSP.c	Mon May 09 20:03:26 2016 +0000
@@ -1,10 +1,63 @@
 #include "Device.h"
+
+#define SSPCR1_SSE       0x00000002
+
+#define TX_SSP_EMPT      0x00000001
+#define RX_SSP_notEMPT   0x00000004
+#define TX_SSP_notFULL   0x00000002
+#define RX_SSP_FULL      0x00000008
+#define SSP_BUSY         0x00000010
+
+#define ADC_ERR_MSK      0x00000001
+#define DAC_ERR_MSK      0x00000002
+
 extern Device device;
 
 void InitSSPWithDefaults(void){
 }
 
 void InitSSP(void){
+  uint32_t Dummy;
+  
+  LPC_SC->PCONP |= (1<<21); //Power on SSP0
+
+  /* выбор частоты для переферии используем по умолчания с делителем основной на 4 */
+  LPC_SC->PCLKSEL1 &= ~(0x3<<10);  //00 CLK/4; 1 CLK; 2 CLK/2; 3 CLK/8
+  LPC_SC->PCLKSEL1 |= (0x0<<10);   //00 CLK/4; 1 CLK; 2 CLK/2; 3 CLK/
+
+  // P0.15~0.18 as SSP0 
+  LPC_PINCON->PINSEL0 &= ~(0x3UL<<30);  //установит Р 0.15 
+  LPC_PINCON->PINSEL0 |=  (0x2UL<<30);  //частота для синхронизациии Master - slave
+
+  LPC_PINCON->PINSEL1 &= ~((0x3<<0)|(0x3<<2)|(0x3<<4)); // устанивоить   Р 0.17    и   Р 0.18
+  LPC_PINCON->PINSEL1 |=  ((0x2<<2)|(0x2<<4));          //    как         MISO0    и    MOSI0
+
+  LPC_PINCON->PINMODE0 &= ~(0x3UL<<30);// ?  установление на Р 0.15 режима On-Chip pull-down resistor enabled
+  LPC_PINCON->PINMODE0 |=  (0x3UL<<30);// ?  установление на Р 0.15 режима On-Chip pull-down resistor enabled
+
+  LPC_PINCON->PINMODE1 &= ~((0x3<<2)|(0x3<<4));// ?  установление на Р 0.17 и Р 0.18 режима On-Chip pull-down resistor enabled
+  LPC_PINCON->PINMODE1 |=  ((0x3<<2)|(0x3<<4));// ?  установление на Р 0.17 и Р 0.18 режима On-Chip pull-down resistor enabled
+
+  LPC_SSP0->CR0 = ((3<<8)|(0<<7)|(0<<4) |0xF); // (0xF)-установление DSS(Data sise select) в 16-битный формат, (3<<8 scr - выбор частоты), 
+                                               //   низкий уровень линии тактирования между кадрами, прикрепление передачи к первому нарастанию тактового мигнала
+                                               //    формат кадра TI.
+   
+  /* SSPCPSR clock prescale register, master mode, minimum divisor is 0x02 */
+  LPC_SSP0->CPSR = 0x2;   // freq = CLK/(cpsdvr*(scr+1)) = 1.6 MHz
+ 
+  /*SSP enable, master mode     */
+  LPC_SSP0->CR1 = SSPCR1_SSE;
+  while (LPC_SSP0->SR & SSP_BUSY); //wait until busy
+  while (LPC_SSP0->SR & RX_SSP_notEMPT)  /* clear the RxFIFO */
+    Dummy = LPC_SSP0->DR;       
+  //all pins after reset is in GPIO mode, so CS pins needn't to configure
+  LPC_GPIO0->FIODIR |= (1<<16);      // P0.16 defined as CS for ADC
+  LPC_GPIO0->FIOSET |= (1<<16);      // set CS for ADC
+
+  LPC_GPIO0->FIODIR |= (1<<23);       // P defined as CS for DAC
+  LPC_GPIO0->FIOCLR |= (1<<23);       // set CS for DAC 
+  while (LPC_SSP1->SR & RX_SSP_notEMPT)
+    Dummy = LPC_SSP1->DR;   /* clear the RxFIFO */
 }
 
 void DeviceSSPReceive(void){
@@ -14,18 +67,18 @@
   LPC_GPIO0->FIOSET = 1<<16; //set SSEL signal for ADCs
   //Get samples
   uint32_t value;
-  device.SSP.accumulator[4] += LPC_SSP0->DR;
-  device.SSP.accumulator[3] += LPC_SSP0->DR;
-  device.SSP.accumulator[2] += LPC_SSP0->DR;
-  device.SSP.accumulator[1] += LPC_SSP0->DR;
-  device.SSP.accumulator[0] += LPC_SSP0->DR;
+  device.controller.SSP.accumulator[4] += LPC_SSP0->DR;
+  device.controller.SSP.accumulator[3] += LPC_SSP0->DR;
+  device.controller.SSP.accumulator[2] += LPC_SSP0->DR;
+  device.controller.SSP.accumulator[1] += LPC_SSP0->DR;
+  device.controller.SSP.accumulator[0] += LPC_SSP0->DR;
   while (LPC_SSP0->SR & 0x00000004) value = LPC_SSP0->DR;
   //Average samples for dither period
-  if (device.dither.state.inPeriodCounter == 0) {
+  if (device.measurement.counter == 0) {
     for (uint8_t i = 0; i < 5; i++){
-      device.SSP.in[i] = device.SSP.accumulator[i] >> 5;
-      device.SSP.accumulator[i] = 0;  
-      device.SSP.dataReady = 1;
+      device.controller.SSP.in[i] = device.controller.SSP.accumulator[i] >> 5;
+      device.controller.SSP.accumulator[i] = 0;  
+      device.controller.SSP.dataReady = 1;
     }
   }
 }
@@ -40,31 +93,9 @@
 
   if (index){
     LPC_SSP0->DR = 0x00000030; //Write DAC0
-    LPC_SSP0->DR = device.SSP.out[0];
+    LPC_SSP0->DR = device.controller.SSP.out[0];
   } else {
     LPC_SSP0->DR = 0x00000031; //Write DAC1
-    LPC_SSP0->DR = device.SSP.out[1];
-    /*
-    //Move to DevicePLCS from here as not SSP specific
-    uint32_t value;
-    switch(device.plcs.state.modulation) {
-        case 1://малое воздействие
-          value = device.SSP.DAC[1] + Gyro.StrayPLC_Pls;
-        break;
-        
-        case 3://малое воздействие
-          value = device.SSP.DAC[1] + Gyro.StrayPLC_Mns;
-        break;
-        
-        case 2://большое воздействие
-          value = device.SSP.DAC[1] + Gyro.StrayPLC_2Mode;
-        break;
-        
-        default://режим без воздействия
-          value = device.SSP.DAC[1];
-        break;
-    }
-    LPC_SSP0->DR = device.SSP.DAC[1];
-    */
+    LPC_SSP0->DR = device.controller.SSP.out[1];
   }
 }
\ No newline at end of file