main.cpp

00001 // Test of ADC, and LED/LCD control of LINAC MO Monitor
00002 // Hengjie Ma
00003 // BNL, NSLS-II, RF
00004 // Nov. 2, 2017
00005 //
00006 #include "mbed.h"
00007 #include "TextLCD.h"
00008 #include <stdio.h>
00009 
00010 // Analog signal input channel gain scalling
00011 #define AIN_cal_CL1           1.0;             // RFIN_500M
00012 #define AIN_cal_CL2           1.0;             // SPB_500M
00013 #define AIN_cal_CL3           1.0;             // GUN_500M
00014 #define AIN_cal_CL4           1.0;             // PB_3G
00015 #define AIN_cal_CL5           1.0;             // K1_3G
00016 #define AIN_cal_CL6           1.0;             // K2_3G
00017 #define AIN_cal_OP1           1.0;             // K3_3G
00018 #define AIN_cal_OP2           1.0;             // 5V_OK
00019 #define AIN_cal_OP3           1.0;             // 15V_OK
00020 #define AIN_cal_OP4           1.0;             // AIN3_SPARE
00021 #define AIN_cal_OP5           1.0;             // AIN6_SPARE
00022 #define AIN_cal_OP6           1.0;             // AIN7_SPARE
00023 
00024 const char * msg[] = {
00025     "RFIN500M ",
00026     "SPB500M  ",
00027     "GUN500M  ",
00028     "PB_3G    ",
00029     "K1_3G    ",
00030     "K2_3G    ",
00031     "K3_3G    ",
00032     "5V_OK    ",
00033     "15V_OK   ",
00034     "AIN3_xxx ",
00035     "AIN6_xxx ",
00036     "AIN7_xxx " 
00037 };
00038 
00039 char trailer[16] = "me too !!!";    // test string
00040 
00041 // I/O pin assignment
00042 DigitalOut myled(LED1);  // on-board blue LED, an idiot light for TCP sanity check
00043 // Primary group of analog inputs 
00044 AnalogIn   AIN0(P30);    // AIN0, RFIN_500M/K3_3G
00045 AnalogIn   AIN1(P29);    // AIN1, SPB_500M/5V_OK
00046 AnalogIn   AIN2(P28);    // AIN2, GUN_500M/15V_OK
00047 AnalogIn   AIN3(P27);    // AIN3, PB_3G/AIN3_SPARE
00048 AnalogIn   AIN6(P26);    // AIN6, K1_3G/AIN6_SPARE
00049 AnalogIn   AIN7(P25);    // AIN7, K2_3G/AIN7_SPARE
00050 DigitalOut MUX_CTL(P11); // PA11, 
00051 
00052 // TextLCD lcd(P9, P10, P5,P6, P7, P8, TextLCD::LCD20x4D, NC, NC, TextLCD::US2066_3V3);  // RS, E, D4-D7, LCDType=LCD16x2, BL=NC, E2=NC, LCDTCtrl=US2066
00053 TextLCD lcd(P9, P10, P5,P8, P7, P6, TextLCD::LCD20x4D, NC, NC, TextLCD::US2066_3V3);  // RS, E, D4-D7, LCDType=LCD16x2, BL=NC, E2=NC, LCDTCtrl=US2066
00054 float meas[12];
00055 int idx, row, col;
00056 
00057 void adc()
00058 {
00059     // Update data 
00060     MUX_CTL = 0;   // group 1
00061     meas[0]  = AIN0.read() * AIN_cal_CL1; 
00062     meas[1]  = AIN1.read() * AIN_cal_CL2; 
00063     meas[2]  = AIN2.read() * AIN_cal_CL3;
00064     meas[3]  = AIN3.read() * AIN_cal_CL4;     
00065     meas[4]  = AIN6.read() * AIN_cal_CL5; 
00066     meas[5]  = AIN7.read() * AIN_cal_CL6;     
00067     MUX_CTL  = 1;   // group 2
00068     meas[6]  = AIN0.read() * AIN_cal_OP1; 
00069     meas[7]  = AIN1.read() * AIN_cal_OP2; 
00070     meas[8]  = AIN2.read() * AIN_cal_OP3;
00071     meas[9]  = AIN3.read() * AIN_cal_OP4;     
00072     meas[10] = AIN6.read() * AIN_cal_OP5; 
00073     meas[11] = AIN7.read() * AIN_cal_OP6;  
00074 }
00075 
00076 void display()
00077 {  
00078     // update 20x4 LED/LCD display,  rolling  
00079     lcd.cls();
00080     for ( idx = 0; idx < 12; idx++)
00081     { 
00082         // lcd.locate(col,row); 
00083         printf("%s %.2f V \r\n", msg[idx], meas[idx]);      // serial console
00084         lcd.printf("%s %.2f V \r\n",msg[idx], meas[idx]);   // LCD/LED
00085         wait(0.1);           // per line
00086         if (row < 3)
00087             {
00088                 row = row + 1;
00089                 lcd.locate(col,row);
00090             }
00091         else
00092         {
00093             row = 0;
00094             wait(1.0);       // pause after each frame of 4 lines
00095             lcd.cls();
00096         }
00097     }
00098     // wait(1.0);           // every 4-screen, 12-line total, refresh 
00099 }
00100 
00101 int main (void) 
00102 {
00103     row = 0;
00104     col = 0;
00105     printf("Test of ADC and LCD .....\r\n"); 
00106     while(true)
00107     {
00108         // get new data
00109         adc();
00110         // display on serial terminal and LCD
00111         display();
00112     }
00113 }
00114 
00115