Diff: main.cpp

Revision:

0:9959d360b987

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Apr 05 12:19:37 2019 +0000
@@ -0,0 +1,214 @@
+/*
+Author: Jan Conradie
+Date: 09-04-2019
+
+The following software is written specifically for the Lochtron Local Oscillator using the LMX2954 chip.
+The PCB in question is documented as LLO_20G_100u.
+
+The following libraries are PCB specific: 
+Attenuator library
+AM2005_ATTEN.h
+AM2005_ATTEN.c
+
+LED, RF switches and power line  control library
+DIGITAL_CTRL.h
+DIGITAL_CTRL.c
+
+The following libraries are meant to be portable to other projects:
+Synthesiser library
+LMX2594_PLL.h
+LMX2594_PLL.c
+
+EEPROM library
+25LC1024_EEP.h
+25LC1024_EEP.c
+
+*/
+
+//Include libraries
+#include "mbed.h"
+#include "main.h"
+#include "math.h"
+#include "stdlib.h"
+#include "LMX2594_PLL.h"
+//#include "AM2005_ATTEN.h"
+//#include "DIGITAL_CTRL.h"
+
+
+//#include "25LC1024_EEP.h"
+
+//Initialise serial port.
+Serial sbus(MBED_SBUS_TX,MBED_SBUS_RX);    //SBUS conneciton
+Serial USB(USBTX , USBRX); // USB to serial connection from the PC to the Mbed
+//Serial uart(MBED_REG_TX,MBED_SBUS_RX);  //Regular UART
+
+
+//Initialise IOs:
+
+//Digital Out
+DigitalOut DOUBLER_EN(MBED_DD_EN);
+DigitalOut OSC_EN(MBED_OSC_EN);
+DigitalOut AMP1_EN(MBED_AMP1_EN);
+DigitalOut AMP2_EN(MBED_AMP2_EN);
+
+DigitalOut ATT_PIN_A(MBED_ATT_A);
+DigitalOut ATT_PIN_B(MBED_ATT_B);
+DigitalOut ATT_PIN_C(MBED_ATT_C);
+DigitalOut ATT_PIN_D(MBED_ATT_D);
+DigitalOut ATT_PIN_E(MBED_ATT_E);
+
+DigitalOut LED_PCB(MBED_LED1);
+DigitalOut LED_STATUS_GREEN(MBED_LED2);
+DigitalOut LED_STATUS_RED(MBED_LED3);
+
+DigitalOut SW1(MBED_SW1);
+DigitalOut MSW1(MBED_MSW1);
+DigitalOut MSW2(MBED_MSW2);
+
+//LMX Debug IO (Digital Inputs)
+DigitalIn RDIR_LMX(MBED_RDIR_SYNTH);
+DigitalIn RCLK_LMX(MBED_RCLK_SYNTH);
+
+//Analogue Inputs
+AnalogIn ADC_TEMP_LMX(MBED_TEMP_LMX);
+AnalogIn ADC_PEAK_DET(MBED_PEAK_DET_IN);
+
+//DAC Output
+AnalogOut DAC_OSC(MBED_DAC);
+
+//SPI PIN initialise for LMX2594
+DigitalOut CS_LMX(MBED_CSB_LMX);
+DigitalOut CLK_LMX(MBED_CLK_LMX);
+DigitalOut MOSI_LMX(MBED_MOSI_LMX);
+DigitalIn MUX_LMX(MBED_MUX_SYNTH); //MISO
+
+
+
+int main()
+{
+  
+  // Variables 
+
+  //unsigned short PLL_REG[113] = {0}; //Create main SPI register 
+  
+  //Setup serial ports
+  USB.baud(115200);
+  sbus.baud(115200);
+  //uart.baud(115200);
+
+  // Wait for board startup
+  wait(1);
+  LMX2594_Load_Defaults(LM2594_PLL_reg);   //Load LMX2594 default register values
+  
+  Startup_Splash();
+  
+  //Device ready to use
+  while(1)
+  {
+        //Set_FrequencyA(7000.10); //Euraka when possible
+    
+  }
+  
+}
+
+void Startup_Splash(void)
+{
+  if(DEBUG)
+  {
+    USB.printf("LLO_20G_100u Starting up\r\n");
+    USB.printf("Software version 1.0\r\n");
+  }  
+  
+}
+
+void LMX2594_Spi_Write(char address, unsigned short data)
+{
+  CS_LMX.write(0); 
+  wait_us(SPI_CLK_SPEED); //delay is determined by slave device
+  MOSI_LMX.write(0); //Set R/W bit to 0 for write
+  CLK_LMX.write(0);
+  
+  wait_us(SPI_CLK_SPEED); //delay is determined by slave device
+  CLK_LMX.write(1); //Complete first bit transmission
+  wait_us(SPI_CLK_SPEED); //delay is determined by slave device
+  
+  char address_length = 7; // Adapt data type to be the correct bit length
+  unsigned short data_length = 16;
+  
+  for(int l = address_length-1; l >= 0; l--) //Start at the second MSB
+  { 
+      CLK_LMX.write(0);
+      MOSI_LMX = (address>> l) & 0x01; //Shift bits through from MSB
+      wait_us(SPI_CLK_SPEED); //delay is determined by slave device
+      CLK_LMX.write(1);
+      wait_us(SPI_CLK_SPEED); //delay is determined by slave device
+  }   
+  
+  for(int l = data_length-1; l >= 0; l--)
+  { 
+      CLK_LMX.write(0);
+      MOSI_LMX = (data>> l) & 0x01; //Shift bits through from MSB 
+      wait_us(SPI_CLK_SPEED); //delay is determined by slave device
+      CLK_LMX.write(1);
+      wait_us(SPI_CLK_SPEED); //delay is determined by slave device
+  }   
+  wait_us(SPI_CLK_SPEED); //delay is determined by slave device
+  CS_LMX.write(1); //End transaction
+}
+
+
+int LMX2594_Spi_Read(char address)
+{
+  CS_LMX.write(0);  
+  wait_us(SPI_CLK_SPEED); //delay is determined by slave device
+  
+  MOSI_LMX.write(1); //Set R/W bit to 1 for read.
+  CLK_LMX.write(0);
+
+  wait_us(SPI_CLK_SPEED); //delay is determined by slave device 
+  CLK_LMX.write(1); //Complete first bit transmission
+  wait_us(SPI_CLK_SPEED); //delay is determined by slave device
+  char address_length = 7; // Adapt data type to be the correct bit length
+  unsigned short data_length = 16;
+  int spi_data_value = 0; // Adapt data type to be the correct bit length
+
+  
+  for(int l = address_length-1; l >= 0; l--) //Start at the second MSB
+  { 
+      CLK_LMX.write(0);
+      MOSI_LMX = (address>> l) & 0x01; //Shift bits through from MSB
+      wait_us(SPI_CLK_SPEED); //delay is determined by slave device
+      CLK_LMX.write(1);
+      wait_us(SPI_CLK_SPEED); //delay is determined by slave device
+  }   
+  
+  for(int l = data_length-1; l >= 0; l--)
+  { 
+      CLK_LMX.write(0);
+      wait_us(SPI_CLK_SPEED); //delay is determined by slave device
+      spi_data_value = spi_data_value + (MUX_LMX.read() << l);
+      CLK_LMX.write(1);
+      wait_us(SPI_CLK_SPEED); //delay is determined by slave device
+  }  
+   
+  CS_LMX.write(1); //End transaction
+  wait_us(SPI_CLK_SPEED); //delay is determined by slave device
+  
+  return spi_data_value;
+}
+
+void LMX2594_Read_All_Registers(void)
+{
+  //Ensure that LMX2594 MUX pin is in read mode
+  char spi_address = 0x00;
+  unsigned short spi_data = 0x2518;
+  LMX2594_Spi_Write(spi_address, spi_data);  
+  
+  char read_address = 0x70; //112
+  //Read all registers
+  for(int c=112; c>=0; c--)
+  {
+    USB.printf("Register[%d] = %x\r\n",c,LMX2594_Spi_Read(read_address));
+    read_address--;
+  }
+}
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