should work for serial comm hv for 9m

slsDetectorSoftware/eigerDetectorServer/9mhvserial_bf.c

@@ -0,0 +1,188 @@
+#include "ansi.h"
+
+#include <termios.h>  	/* POSIX terminal control definitions */
+#include <stdio.h>
+#include <stdlib.h>			// atoi
+#include <fcntl.h>			// File control definitions
+#include <sys/ioctl.h>		// ioctl
+#include <unistd.h>			// read, close
+#include <string.h>  		// memset
+#include <linux/i2c-dev.h>	// I2C_SLAVE, __u8 reg
+
+#define PORTNAME 				"/dev/ttyBF1"
+#define GOODBYE 				200
+#define BUFFERSIZE 				255
+#define I2C_DEVICE_FILE			"/dev/i2c-0"
+#define I2C_DEVICE_ADDRESS		0x4C
+//#define I2C_DEVICE_ADDRESS	0x48
+#define I2C_REGISTER_ADDRESS	0x40
+
+
+
+int i2c_open(const char* file,unsigned int addr){
+
+	//device file
+	int fd = open( file, O_RDWR );
+	if (fd < 0)	{
+		cprintf(RED,"Warning: Unable to open file %s\n",file);
+		return -1;
+	}
+
+	//device address
+	if( ioctl( fd, I2C_SLAVE, addr&0x7F ) < 0 )	{
+		cprintf(RED,"Warning: Unable to set slave address:0x%x \n",addr);
+		return -2;
+	}
+	return fd;
+}
+
+
+int i2c_read(){
+
+	int fd = i2c_open(I2C_DEVICE_FILE, I2C_DEVICE_ADDRESS);
+	__u8 reg = I2C_REGISTER_ADDRESS & 0xff;
+
+	unsigned char buf = reg;
+	if (write(fd, &buf, 1)!= 1){
+		cprintf(RED,"Warning: Unable to write read request to register %d\n", reg);
+		return -1;
+	}
+	//read and update value (but old value read out)
+	if(read(fd, &buf, 1) != 1){
+		cprintf(RED,"Warning: Unable to read register %d\n", reg);
+		return -2;
+	}
+	//read again to read the updated value
+	if(read(fd, &buf, 1) != 1){
+		cprintf(RED,"Warning: Unable to read register %d\n", reg);
+		return -2;
+	}
+	close(fd);
+	return buf;
+}
+
+
+int i2c_write(unsigned int value){
+
+	__u8 val = value & 0xff;
+
+	int fd = i2c_open(I2C_DEVICE_FILE, I2C_DEVICE_ADDRESS);
+	if(fd < 0)
+		return fd;
+
+	__u8 reg = I2C_REGISTER_ADDRESS & 0xff;
+	char buf[3];
+	buf[0] = reg;
+	buf[1] = val;
+	if (write(fd, buf, 2) != 2) {
+		cprintf(RED,"Warning: Unable to write %d to register %d\n",val, reg);
+		return -1;
+	}
+
+	close(fd);
+	return 0;
+}
+
+
+
+
+
+int main(int argc, char* argv[]) {
+
+	int fd = open(PORTNAME, O_RDWR | O_NOCTTY);
+	if(fd < 0){
+		cprintf(RED,"Warning: Unable to open port %s\n", PORTNAME);
+		return -1;
+	}
+
+	struct termios serial_conf;
+	// Get the current options for the port
+	tcgetattr(fd, &serial_conf);
+	// reset structure
+	memset(&serial_conf,0,sizeof(serial_conf));
+	// control options
+	serial_conf.c_cflag = B2400 | CS8 | CREAD | CLOCAL;
+	// input options
+	serial_conf.c_iflag = IGNPAR;
+	// output options
+	serial_conf.c_oflag = 0;
+	// line options
+	serial_conf.c_lflag = ICANON;
+	// flush input
+	tcflush(fd, TCIFLUSH);
+	// set new options for the port, TCSANOW:changes occur immediately without waiting for data to complete
+	tcsetattr(fd, TCSANOW, &serial_conf);
+
+
+
+
+	int ret = 0;
+	int n = 0;
+	int ival= 0;
+	char buffer[BUFFERSIZE]="";
+	cprintf(GREEN,"Ready...\n");
+
+	while(ret != GOODBYE){
+		memset(buffer, 0, BUFFERSIZE);
+		buffer[BUFFERSIZE-1]='\n';
+
+		n = read(fd,buffer,BUFFERSIZE);
+#ifdef VERBOSE
+		cprintf(BLUE,"Received %d Bytes\n", n);
+#endif
+		cprintf(BLUE,"Got message: %s\n",buffer);
+
+		switch(buffer[0]){
+		case 'p':
+			if (!sscanf(&buffer[1],"%d",&ival)){
+				cprintf(RED,"Warning: cannot scan voltage value\n");
+				break;
+			}
+
+			if(i2c_write(ival)<0)
+				strcpy(buffer,"failed");
+			else
+				strcpy(buffer,"successful");
+			cprintf(GREEN,"%s\n",buffer);
+			n = write(fd, buffer, BUFFERSIZE);
+#ifdef VERBOSE
+			cprintf(BLUE,"Sent %d Bytes\n", n);
+#endif
+			break;
+
+		case 'g':
+			ival = i2c_read();
+			//ok/ fail
+			if(ival < 0)
+				strcpy(buffer,"failed");
+			else
+				strcpy(buffer,"successful");
+			n = write(fd, buffer, BUFFERSIZE);
+#ifdef VERBOSE
+			cprintf(BLUE,"Sent %d Bytes\n", n);
+#endif
+			//value
+			if(ival >= 0){
+				cprintf(GREEN,"%d\n",ival);
+				sprintf(buffer,"%d\n",ival);
+				n = write(fd, buffer, BUFFERSIZE);
+#ifdef VERBOSE
+				cprintf(BLUE,"Sent %d Bytes\n", n);
+#endif
+			}else cprintf(GREEN,"%s\n",buffer);
+			break;
+
+		case 'e':
+			printf("Exiting Program\n");
+			ret = GOODBYE;
+			break;
+		default:
+			printf("Unknown Command\n");
+			break;
+		}
+	}
+
+	close(fd);
+	printf("Goodbye Serial Communication for HV(9M)\n");
+	return 0;
+}