Mauricio Donatti
LNLS Driver Heaters DCM Firmware with two sockets: - HTTP server at port 80 - TCP socket at port 5757 for EPICS
Dependencies: mbed mbed-rtos AMC7812B EthernetInterface TextLCD
Firmware for DCM heaters driver - 8 channel, 12V/1.5A, PWM controlled with interlock and failure diagnostics
Mauricio Martins Donatti
Brazilian Synchrotron Light Laboratory
Electronics Support Group - GAE
mauricio.donatti@lnls.br
Extra scripts on Github page:
1. Driver_DCM_Socket.py: Open a socket and comunicate with the Driver.
2. Find_IP.py: Search a subdomain for devices (IPs) with a TCP Server Socket on the specified port.
3. firmware.txt: device firmware link (MBED).
4. index.html: HTTP server GET answer - html + JS.
Diff: main.cpp
- Revision:
- 3:820e3a42c06b
- Parent:
- 2:7a49ed074968
--- a/main.cpp Mon Apr 26 11:22:48 2021 +0000
+++ b/main.cpp Fri Aug 06 13:07:37 2021 +0000
@@ -19,24 +19,29 @@
*******************************************************************/
#define SUPPLY_24V
+//#define CAL
#include "mbed.h"
#include "TextLCD.h"
#include "EthernetInterface.h"
#include "amc7812b.h"
+
+#define ERROR_INTERFACE
+//#define DEBUG_INTERFACE
+
#include "definitions.h"
#include "HTTP_SERVER.h"
-#define VERSION "v3.0-2018-08\0" //Firmware Version
+#define VERSION "v4.1-2021-07\0" //Firmware Version
#define DEVICE_NAME "DH-8CH-001\0" //Device Name - Ethernet default hostname
#define PORT 6767 //Socket Port (EPICS data)
-
-
//SPI constructor
SPI spi(MOSI,MISO,SCLK); //mosi, miso, sclk
+Serial pc(USBTX, USBRX, 115200);
+
//Digital Output constructors
DigitalOut cs_u4(CS_U4);
DigitalOut cs_u5(CS_U5);
@@ -87,7 +92,8 @@
uint16_t data;
}rx,tx;
-FILE *cfg_file; //Config file variable
+FILE *cfg_file; //Config file variable
+FILE *html_file; //Html file variable
int tmp,i; //auxiliary integers
int LCD_index=0; //LCD index (displayed channel changes from 1 to 8)
@@ -168,10 +174,33 @@
volatile int save_cfg_time;
+char html_page[HTML_MAX_SIZE];
+int html_page_size;
+
//main function
int main() {
//heartbeat.attach(&heart,HEARTBEAT_DELAY); //attach heartbeat ticker
+
t.start();
+ // Reading webserver file
+ wait_ms(10); //Wait powerup
+
+ html_file = fopen("/local/index.htm","r"); // Open "index.html" on the local file system for reading
+ if(html_file==NULL){ //If file doesnt exist
+ html_page_size = sprintf(html_page,"ERROR: File Not Found");
+ ERROR_PRINTF("index.htm file not found at local file system!");
+ fclose(html_file); //close html file
+ }
+ else
+ { //File exists
+ fseek(html_file, 0, SEEK_SET);
+ html_page_size = 0;
+ while (!feof(html_file))
+ html_page[html_page_size++]= getc(html_file);
+ if(feof(html_file))
+ html_page_size--;
+ fclose(html_file); //close html file
+ }
amc_setup(); //Setup AMC7812B
setup(); //Initialize LCD and variables
@@ -190,6 +219,7 @@
else {
clear_lcd();
display.printf("HW ERROR: eth conn"); //HW ethernet error - probably PHY broken
+ ERROR_PRINTF("Ethernet Connection Hardware Error!");
//Turn LED 1 Red and Green - ETH HW Error
display.putc(0xFE);
display.putc(0x5A);
@@ -225,7 +255,7 @@
eth_led1 = 1; //turn on led1
if(server_init == 0) //initiate http server the first time
{
- httpsvr.init();
+ httpsvr.init(html_page,html_page_size);
server_init = 1; //turn flag on - Server initiated
server_thread.start(server_loop); //run thread - monitoring port 80
}
@@ -417,7 +447,7 @@
ch_msg_idx--; //decrement to index 0 to 7
if(socket_buffer[1]=='r') //read message
{
- n = sprintf(send_buffer,"OK>%d:\tV=%4.2f\tI=%3.2f\tC=%d\tIL=%3.2f\tF=%d\tOL=%d\tNL=%d\tE=%d\r\n",ch_msg_idx+1,\
+ n = sprintf(send_buffer,"OK>%d:\tV=%4.2f\tI=%3.2f\tC=%.1f\tIL=%3.2f\tF=%d\tOL=%d\tNL=%d\tE=%d\r\n",ch_msg_idx+1,\
CH[ch_msg_idx].voltage,CH[ch_msg_idx].current,\
CH[ch_msg_idx].control,CH[ch_msg_idx].limit,\
CH[ch_msg_idx].failure,CH[ch_msg_idx].overload>ERROR_REP,\
@@ -616,14 +646,17 @@
fast_read_U4();
//Estimate control input (Duty cycle in %)
- CH[i].control = FILTC*CH[i].control+FILTC2*(((rx.data*5.0/0xFFF))-VC_OFF)/VC_K;
+ CH[i].control = FILTC*CH[i].control+FILTC2*(rx.data*VC_K*5.0/0xFFF+VC_OFF);
- //Verify limits
- if(CH[i].control<0)
- CH[i].control=0;
- if(CH[i].control>100)
- CH[i].control=100;
+ #ifndef CAL
+ //Verify limits
+ if(CH[i].control<0)
+ CH[i].control=0;
+ if(CH[i].control>100)
+ CH[i].control=100;
+ #endif
}
+ DEBUG_PRINTF("Duty Cycle Calibration - Measured Voltage: %f",rx.data*5.0/0xFFF);
}
}
}
@@ -643,7 +676,7 @@
{
while(1)
{
- httpsvr.run(&CH[0]); //wait for new client connection
+ httpsvr.run(&CH[0],dev_name); //wait for new client connection
server_led = !server_led; //togle server led
}
}
@@ -688,7 +721,7 @@
//Reset AMC7812B to make sure both are in the initial state
amc_reset = 0;
- wait_ms(1);
+ wait_ms(5);
amc_reset = 1;
// Setup the spi for 12 bit data, high steady state clock,
@@ -696,7 +729,7 @@
spi.format(12,1);
spi.frequency(10000000);
- wait_ms(5); //Wait AMC7812B power up
+ wait_ms(10); //Wait AMC7812B power up
//Disabling Power Down Register
tx.data = 0x7FFE;
@@ -955,6 +988,7 @@
fprintf(cfg_file,"%d %3.2f 1\n",i+1,DEFAULT_CURR_LIMIT); //Write to file
CH[i].enable = 1;
}
+ ERROR_PRINTF("lim.cfg file not found! Creating default file...");
}
else //File exists :)
{
@@ -1039,7 +1073,7 @@
normal(); //Normal mode
}
clear_lcd(); //Clear LCD
- display.printf("CH%d %5.2fV/%3.2fAC:%03d%% IL:%3.2fA",LCD_index+1,CH[LCD_index].voltage,CH[LCD_index].current,CH[LCD_index].control,CH[LCD_index].limit);
+ display.printf("CH%d %5.2fV/%3.2fAC:%03.0f%% IL:%3.2fA",LCD_index+1,CH[LCD_index].voltage,CH[LCD_index].current,CH[LCD_index].control,CH[LCD_index].limit);
}
//Heartbeat toogle MBED led function