void write_configuration_block_USB500( libusb_device_handle *udev, configurationBlock *cblock )
{
uint8_t send_configuration[3] = {0x01, 0xff, 0xff}; // Send Configuration String
uint8_t acknowledge = 0x0; // Acknowledge
unsigned int size = 0;
int ret;
int transferred;
/* Determine the size of the Configuration Block */
switch(cblock->type) {
case 0x1: // EL-USB-1 Temperature Logger Packet size 64 bytes
case 0x2: // EL-USB-1 Temperature Logger Packet size 64 bytes
send_configuration[1] = 0x40; // Low Byte
send_configuration[2] = 0x00; // High Byte
size = 64;
break;
case 0x3: // EL-USB-2 Temperature/Humidity Logger Packet size 128 bytes
send_configuration[1] = 0x80; // Low Byte
send_configuration[2] = 0x00; // High Byte
size = 128;
break;
case 0x4: // EL-USB-3 Voltage Logger 256 bytes
case 0x6: // EL-USB-3 Voltage Logger 256 bytes
case 0x5: // EL-USB-4 Current Logger 256 bytes
case 0x7: // EL-USB-4 Current Logger 256 bytes
send_configuration[1] = 0x00; // Low Byte
send_configuration[2] = 0x01; // High Byte
size = 256;
break;
default:
printf("Unknown type device = %d\n", cblock->type);
return;
break;
}
unlock_device_USB500(udev);
ret = libusb_bulk_transfer(udev, LIBUSB_ENDPOINT_OUT | 2, (unsigned char *) send_configuration, 3, &transferred, USB500_WAIT_WRITE);
if (ret < 0) {
perror("Error in sending configuration acknowledgement (Bulk Write)");
}
ret = libusb_bulk_transfer(udev, LIBUSB_ENDPOINT_OUT | 2, (unsigned char *) cblock, size, &transferred, USB500_WAIT_WRITE);
if (ret < 0) {
perror("Error in sending configuration block (Bulk Write)");
}
acknowledge = 0x0;
do {
ret = libusb_bulk_transfer(udev, LIBUSB_ENDPOINT_IN|2, (unsigned char *) &acknowledge, 1, &transferred, USB500_WAIT_READ);
} while (acknowledge != 0xff);
lock_device_USB500(udev);
}
int read_configuration_block_USB500( libusb_device_handle *udev, configurationBlock *cblock )
{
unsigned char request_configuration[3] = {0x00, 0xff, 0xff}; // Request Configuration String
uint8_t acknowledge[3] = {0x00, 0x00, 0x00}; // Acknowledge string
unsigned int size = 0;
int ret;
int try = 0;
int transferred;
unlock_device_USB500(udev);
ret = libusb_bulk_transfer(udev, LIBUSB_ENDPOINT_OUT | 2, request_configuration, 3, &transferred, USB500_WAIT_WRITE);
if (ret < 0) {
perror("Error in requesting configuration (Bulk Write)");
lock_device_USB500(udev);
return 0;
}
acknowledge[0] = 0x0;
do {
ret = libusb_bulk_transfer(udev, LIBUSB_ENDPOINT_IN|2, (unsigned char *) acknowledge, 3, &transferred, USB500_WAIT_READ);
if (ret < 0) {
perror("Error in acknowledging configuration from USB 500");
printf("Bytes transferred = %d\n", transferred);
lock_device_USB500(udev);
return 0;
}
if (transferred == 3 && acknowledge[0] != 0x2) {
printf("read_configuration_block_USB500: try = %d first byte = %x\n", try, acknowledge[0]);
libusb_bulk_transfer(udev, LIBUSB_ENDPOINT_OUT | 2, (unsigned char *) request_configuration, 3, &transferred, USB500_WAIT_WRITE);
try++;
}
if (try > 10) {
printf("read_configuration_block_USB500: try = %d Stopping now \n", try);
lock_device_USB500(udev);
return 0;
exit(-1);
}
} while (acknowledge[0] != 0x2);
size = ((acknowledge[2] << 8) | acknowledge[1]);
do {
ret = libusb_bulk_transfer(udev, LIBUSB_ENDPOINT_IN | 2, (unsigned char *) cblock, size, &transferred, USB500_WAIT_READ);
if (ret < 0) {
perror("Error in reading configuration block from USB 500");
printf("Size = %d transferred = %d\n", size, transferred);
}
} while (transferred != size);
lock_device_USB500(udev);
return cblock->type;
}
int read_configuration_block_USB500( usb_dev_handle *udev, configurationBlock *cblock )
{
char request_configuration[3] = {0x00, 0xff, 0xff}; // Request Configuration String
__u8 acknowledge[3] = {0x00, 0x00, 0x00}; // Acknowledge string
unsigned int size = 0;
int ret;
int try = 0;
unlock_device_USB500(udev);
ret = usb_bulk_write(udev, USB_ENDPOINT_OUT | 2, request_configuration, 3, USB500_WAIT_WRITE);
if (ret < 0) {
perror("Error in requesting configuration (Bulk Write)");
}
acknowledge[0] = 0x0;
do {
ret = usb_bulk_read(udev, USB_ENDPOINT_IN|2, (char *) acknowledge, 3, USB500_WAIT_READ);
if ( ret < 0 ) {
perror("Error in acknowledging configuration from USB 500");
}
if (ret == 3 && acknowledge[0] != 0x2) {
printf("read_configuration_block_USB500: try = %d first byte = %x\n", try, acknowledge[0]);
usb_bulk_write(udev, USB_ENDPOINT_OUT | 2, request_configuration, 3, USB500_WAIT_WRITE);
try++;
}
if (try > 10) {
printf("read_configuration_block_USB500: try = %d Stopping now \n", try);
exit(-1);
}
} while (acknowledge[0] != 0x2);
size = ((acknowledge[2] << 8) | acknowledge[1]);
do {
ret = usb_bulk_read(udev, USB_ENDPOINT_IN | 2, (char *) cblock, size, USB500_WAIT_READ);
if ( ret < 0 ) {
perror("Error in reading configuration block from USB 500");
}
} while (ret != size);
lock_device_USB500(udev);
return cblock->type;
}
int read_recorded_data_USB504( usb_dev_handle *udev, configurationBlock *cblock, usb504_data *data_504 )
{
__u8 request_data[3] = {0x03, 0xff, 0xff}; // Request Recorded Data
__u8 acknowledge[3] = {0x00, 0x00, 0x00}; // Acknowledge string
int packet_size = 512;
int memory_size = 0xfe00;
__u8 rdata[0xfe00]; // max data size
int num_packets;
unsigned int size = 0;
int ret;
int i;
struct tm ltime;
time_t currentTime;
time(¤tTime);
localtime_r(¤tTime, <ime); // set daylight savings field
stop_logging_USB500(udev, cblock); // must stop logging before reading the data.
unlock_device_USB500(udev);
ret = usb_bulk_write(udev, USB_ENDPOINT_OUT | 2, (char *)request_data, 3, USB500_WAIT_WRITE);
if (ret < 0) {
perror("Error in requesting configuration (Bulk Write)");
}
do {
ret = usb_bulk_read(udev, USB_ENDPOINT_IN|2, (char *) acknowledge, 3, USB500_WAIT_READ);
if ( ret < 0 ) {
perror("Error in acknowledging read data from USB 500");
}
} while (acknowledge[0] != 0x2);
size = ((acknowledge[2] << 8) | acknowledge[1]);
if (size != memory_size) {
printf("Memory Error mismatch. size = %#x should be %#x\n", size, memory_size);
return -1;
}
num_packets = memory_size / packet_size;
for ( i = 0; i < num_packets; i++ ) {
do {
ret = usb_bulk_read(udev, USB_ENDPOINT_IN | 2, (char *) &rdata[i*packet_size], packet_size, USB500_WAIT_READ);
if (ret < 0) {
perror("Error reading data. Retrying.");
}
} while (ret != packet_size);
}
lock_device_USB500(udev);
ltime.tm_sec = cblock->startTimeSeconds;
ltime.tm_min = cblock->startTimeMinutes;
ltime.tm_hour = cblock->startTimeHours;
ltime.tm_mday = cblock->startTimeDay;
ltime.tm_mon = cblock->startTimeMonth - 1;
ltime.tm_year = cblock->startTimeYear + 100;
data_504[0].time = mktime(<ime); // get local time stamp
for (i = 0; i < cblock->sampleCount; i++) {
data_504[i].time = data_504[0].time + i*cblock->sampleRate;
data_504[i].current = cblock->calibrationMValue*rdata[i] + cblock->calibrationCValue;
data_504[i].current *= cblock->capScalingFactor;
}
start_logging_USB500(udev, cblock);
return cblock->sampleCount;
}
int read_recorded_data_USB502( libusb_device_handle *udev, configurationBlock *cblock, usb502_data *data_502 )
{
int packet_size = 512;
int memory_size = 0x8000;
int num_packets;
unsigned int size = 0;
int ret;
int transferred;
int i;
struct tm ltime;
time_t currentTime;
uint8_t request_data[3] = {0x03, 0xff, 0xff}; // Request Recorded Data
uint8_t acknowledge[3] = {0x00, 0x00, 0x00}; // Acknowledge string
uint8_t rdata[0x8000]; // max data size
time(¤tTime);
localtime_r(¤tTime, <ime); // set daylight savings field
stop_logging_USB500(udev, cblock); // must stop logging before reading the data.
unlock_device_USB500(udev);
ret = libusb_bulk_transfer(udev, LIBUSB_ENDPOINT_OUT | 2, (unsigned char *)request_data, 3, &transferred, USB500_WAIT_WRITE);
if (ret < 0) {
perror("Error in requesting configuration (Bulk Write)");
}
do {
ret = libusb_bulk_transfer(udev, LIBUSB_ENDPOINT_IN|2, (unsigned char *) acknowledge, 3, &transferred, USB500_WAIT_READ);
if (ret < 0) {
perror("Error in acknowledging read data from USB 500");
}
} while (acknowledge[0] != 0x2);
size = ((acknowledge[2] << 8) | acknowledge[1]);
if (size != memory_size) {
printf("Memory Error mismatch. size = %#x should be %#x\n", size, memory_size);
return -1;
}
num_packets = memory_size / packet_size;
for ( i = 0; i < num_packets; i++ ) {
do {
ret = libusb_bulk_transfer(udev, LIBUSB_ENDPOINT_IN | 2, (unsigned char *) &rdata[i*packet_size],
packet_size, &transferred, USB500_WAIT_READ);
if (ret < 0) {
perror("Error reading data. Retrying.");
}
} while (transferred != packet_size);
}
lock_device_USB500(udev);
ltime.tm_sec = cblock->startTimeSeconds;
ltime.tm_min = cblock->startTimeMinutes;
ltime.tm_hour = cblock->startTimeHours;
ltime.tm_mday = cblock->startTimeDay;
ltime.tm_mon = cblock->startTimeMonth - 1;
ltime.tm_year = cblock->startTimeYear + 100;
data_502[0].time = mktime(<ime); // get local time stamp
for (i = 0; i < cblock->sampleCount; i++) {
data_502[i].time = data_502[0].time + i*cblock->sampleRate;
data_502[i].temperature = cblock->calibrationMValue*rdata[2*i] + cblock->calibrationCValue; // temperature first byte
data_502[i].humidity = 0.5*rdata[2*i+1]; // humidity second byte
}
start_logging_USB500(udev, cblock);
return cblock->sampleCount;
}
