Diff: DeviceI2C.c

Revision:

198:78dd6d14d108

Parent:

197:7a05523bf588

--- a/DeviceI2C.c	Wed Oct 19 10:55:05 2016 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,155 +0,0 @@
-#include "Device.h"
-
-//I2C Control Set Register
-#define I2CONSET_I2EN  0x0000040
-#define I2CONSET_AA    0x0000004
-#define I2CONSET_SI    0x0000008
-#define I2CONSET_STO   0x0000010
-#define I2CONSET_STA   0x0000020
-//I2C Control clear Register
-#define I2CONCLR_AAC   0x0000004
-#define I2CONCLR_SIC   0x0000008
-#define I2CONCLR_STAC  0x0000020
-#define I2CONCLR_I2ENC 0x0000040
-//I2C SCL Duty Cycle Register
-#define I2SCLH_SCLH    0x00000080 //High
-#define I2SCLL_SCLL    0x00000080 //Low
-//Address
-#define I2C_A_ADDRESS  0x0000005E //address of slave potentiometer A (table 6-2 of pot's manual)
-#define I2C_B_ADDRESS  0x0000005C //address of slave potentiometer B (table 6-2 of pot's manual)
-#define I2C_WRITE_CMD  0x00000000 //address of wiper0 register in memory map
-//Timeout
-#define I2C_TIMEOUT    1000
-
-extern Device device;
-
-//
-//Attention!!!
-//  Different LPC17xx.h versions declare different I2C registers names:
-//    LPC_I2C0->CONCLR (Keil?)/ LPC_I2C0->I2CONCLR (mbed)
-//    ...
-//
-
-void InitI2CDefaultSettings(void){
-  device.controller.I2C.settings.trigger = 1000;
-}
-
-void InitI2CState(void) {
-  device.controller.I2C.state.buffer[0] = I2C_A_ADDRESS;
-  device.controller.I2C.state.buffer[1] = I2C_WRITE_CMD;
-  device.controller.I2C.state.buffer[2] = 255 - device.isacs.potentiometers.settings.a;
-  device.controller.I2C.state.buffer[3] = I2C_B_ADDRESS;
-  device.controller.I2C.state.buffer[4] = I2C_WRITE_CMD;
-  device.controller.I2C.state.buffer[5] = 255 - device.isacs.potentiometers.settings.b;
-  device.controller.I2C.state.position = 0;
-  device.controller.I2C.state.counter = 0;
-  device.controller.I2C.state.trigger = device.controller.I2C.settings.trigger;
-  device.controller.I2C.state.enabled = 0;
-}
-
-void DeviceStartI2C(void) {
-  LPC_SC->PCONP |= (1 << 7);//I2C0 power on
-
-  LPC_PINCON->PINSEL1 &= ~0x03C00000; //P0.27 - SDA
-  LPC_PINCON->PINSEL1 |= 0x01400000;  //P0.28 - SCK
-  
-  LPC_I2C0->CONCLR = I2CONCLR_AAC | I2CONCLR_SIC | I2CONCLR_STAC | I2CONCLR_I2ENC; //Master mode
-  //LPC_I2C0->I2CONCLR = I2CONCLR_AAC | I2CONCLR_SIC | I2CONCLR_STAC | I2CONCLR_I2ENC; //Master mode
-
-  LPC_I2C0->SCLL   = I2SCLL_SCLL; // - счетчик scl low time period
-  //LPC_I2C0->I2SCLL   = I2SCLL_SCLL; // - счетчик scl low time period
-  LPC_I2C0->SCLH   = I2SCLH_SCLH; // - счетчик scl high time period
-  //LPC_I2C0->I2SCLH   = I2SCLH_SCLH; // - счетчик scl high time period
-  
-  LPC_I2C0->CONSET = I2CONSET_I2EN; //включение интерфейса I2C
-  //LPC_I2C0->I2CONSET = I2CONSET_I2EN; //включение интерфейса I2C
-  
-  device.controller.I2C.state.CON0 = LPC_I2C0->CONSET & (~LPC_I2C0->CONCLR);
-  
-  i2cEnableTransmission();
-}
-
-void i2cProcess(void) {
-  if (!device.controller.I2C.state.enabled) return;        //Transmission disabled, go away
-
-  device.controller.I2C.state.counter++;
-  if (device.controller.I2C.state.counter > device.controller.I2C.state.trigger){//Time out, go away
-    device.controller.I2C.state.counter = 0;
-    device.controller.I2C.state.enabled = 0;
-    LPC_I2C0->CONSET = I2CONSET_STO;                     //Set Stop flag
-    //LPC_I2C0->I2CONSET = I2CONSET_STO;                     //Set Stop flag
-    LPC_I2C0->CONCLR = I2CONCLR_AAC | I2CONCLR_SIC | I2CONCLR_STAC;
-    //LPC_I2C0->I2CONCLR = I2CONCLR_AAC | I2CONCLR_SIC | I2CONCLR_STAC;
-    return;
-  }
-  
-  if (!(LPC_I2C0->CONSET & I2CONSET_SI)) return;         //State of I2C bus has not been changed
-  //if (!(LPC_I2C0->I2CONSET & I2CONSET_SI)) return;         //State of I2C bus has not been changed
-
-  uint32_t StatValue = LPC_I2C0->STAT;
-  //uint32_t StatValue = LPC_I2C0->I2STAT;
-  switch ( StatValue ) {
-    //Start condition issued (write data for the first potentiometer) 
-    case 0x08:
-      device.controller.I2C.state.position = 0;                       //Init buffer position
-      device.controller.I2C.state.counter = 0;                 //Init countdown
-      LPC_I2C0->DAT = device.controller.I2C.state.buffer[device.controller.I2C.state.position++];  //Send address
-      //LPC_I2C0->I2DAT = device.controller.I2C.state.buffer[device.controller.I2C.state.position++];  //Send address
-      LPC_I2C0->CONCLR = (I2CONCLR_SIC | I2CONCLR_STAC); //Clear interrupt bit and start bit
-      //LPC_I2C0->I2CONCLR = (I2CONCLR_SIC | I2CONCLR_STAC); //Clear interrupt bit and start bit
-    break;
-    
-    //Repeated started is issued (write data for the second potentiometer) 
-    case 0x10:
-      LPC_I2C0->DAT = device.controller.I2C.state.buffer[device.controller.I2C.state.position++];  //Send address
-      //LPC_I2C0->I2DAT = device.controller.I2C.state.buffer[device.controller.I2C.state.position++];  //Send address
-      LPC_I2C0->CONCLR = (I2CONCLR_SIC | I2CONCLR_STAC); //Clear interrupt bit and start bit
-      //LPC_I2C0->I2CONCLR = (I2CONCLR_SIC | I2CONCLR_STAC); //Clear interrupt bit and start bit
-    break;
-
-    //ACK after slave address reading
-    case 0x18:
-      LPC_I2C0->DAT = device.controller.I2C.state.buffer[device.controller.I2C.state.position++];  //Send another byte
-      //LPC_I2C0->I2DAT = device.controller.I2C.state.buffer[device.controller.I2C.state.position++];  //Send another byte
-      LPC_I2C0->CONCLR = I2CONCLR_SIC;                   //Clear interrupt bit
-      //LPC_I2C0->I2CONCLR = I2CONCLR_SIC;                   //Clear interrupt bit
-    break;
-
-    //ACK after data byte
-    case 0x28:
-      if  (device.controller.I2C.state.position == I2C_BUFFER_LENGTH) { //Data transmission finished
-        device.controller.I2C.state.enabled = 0;
-        LPC_I2C0->CONSET = I2CONSET_STO;                 //Set Stop flag
-        //LPC_I2C0->I2CONSET = I2CONSET_STO;                 //Set Stop flag
-      } else if (device.controller.I2C.state.position == 3) {
-       LPC_I2C0->CONSET = I2CONSET_STA;
-       //LPC_I2C0->I2CONSET = I2CONSET_STA;
-       //sprintf(device.service.buffer, "I2C 0x28 mid\r\n"); WriteConcole(); //Development message
-      } else {
-        LPC_I2C0->DAT = device.controller.I2C.state.buffer[device.controller.I2C.state.position++];//Send another byte   
-        //LPC_I2C0->I2DAT = device.controller.I2C.state.buffer[device.controller.I2C.state.position++];//Send another byte   
-      }
-      LPC_I2C0->CONCLR = I2CONCLR_SIC;                   //Clear interrupt bit
-      //LPC_I2C0->I2CONCLR = I2CONCLR_SIC;                   //Clear interrupt bit
-    break;
-
-    //No acknoledgement after address transmitting
-    case 0x20:
-    //No acknoledgement after data block transmitting
-    case 0x30:
-      LPC_I2C0->CONSET = I2CONSET_STO;                   //Set Stop flag
-      //LPC_I2C0->I2CONSET = I2CONSET_STO;                   //Set Stop flag
-      LPC_I2C0->CONCLR = (I2CONCLR_SIC | I2CONCLR_STAC);
-      //LPC_I2C0->I2CONCLR = (I2CONCLR_SIC | I2CONCLR_STAC);
-      device.controller.I2C.state.enabled = 0;             //Disable transmission
-    break;
-  }
-}
-
-void i2cEnableTransmission(void){
-  device.controller.I2C.state.position = 0;
-  device.controller.I2C.state.counter = 0;
-  LPC_I2C0->CONSET = I2CONSET_STA; //Set start flag
-  //LPC_I2C0->I2CONSET = I2CONSET_STA; //Set start flag
-  device.controller.I2C.state.enabled = 1;                 //Enable transmission
-}
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