aboutsummaryrefslogtreecommitdiffstats
path: root/simpad-utilities/serload/serialdownload.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'simpad-utilities/serload/serialdownload.cpp')
-rw-r--r--simpad-utilities/serload/serialdownload.cpp408
1 files changed, 408 insertions, 0 deletions
diff --git a/simpad-utilities/serload/serialdownload.cpp b/simpad-utilities/serload/serialdownload.cpp
index e69de29bb2..c58de2280f 100644
--- a/simpad-utilities/serload/serialdownload.cpp
+++ b/simpad-utilities/serload/serialdownload.cpp
@@ -0,0 +1,408 @@
+//=============================================================================
+// Project: SIMpad
+//=============================================================================
+// FILE-NAME: serialdownload.cpp
+// FUNCTION: Serial download of a new image from PC to SIMpad
+//
+// AUTHOR: Juergen Messerer, Peter Voser
+// CREAT.-DATE: 01.04.2001 (dd.mm.yy)
+//
+// NOTES: -
+//
+//=============================================================================
+
+#include <iostream>
+#include "serialdownload.h"
+using namespace std;
+
+//=============================================================================
+//=============================================================================
+SerialDownload::SerialDownload()
+{
+}
+
+//=============================================================================
+//=============================================================================
+SerialDownload::~SerialDownload()
+{
+}
+
+//=============================================================================
+//=============================================================================
+int SerialDownload::openSerialPort(const char* portDev, int& errorNumber)
+{
+ _serialPort = open(portDev, O_RDWR | O_NONBLOCK);
+
+ if (_serialPort == -1)
+ {
+ errorNumber = errno;
+ return -1;
+ }
+
+ // Read old serial port setup
+ termios serialPortSetup;
+ int success = tcgetattr(_serialPort, &serialPortSetup );
+ if (success < 0)
+ {
+ errorNumber = errno;
+ perror(0);
+ return -1;
+ }
+
+ serialPortSetup.c_iflag = 0L;
+ serialPortSetup.c_oflag = 0L;
+
+ // Control mode flags
+ serialPortSetup.c_cflag &= ~(CSTOPB|PARENB|CRTSCTS);
+ serialPortSetup.c_cflag |= (CS8|CLOCAL);
+
+ // Local mode flags
+ serialPortSetup.c_lflag = 0L;
+
+ // control characters
+ serialPortSetup.c_cc[VTIME] = 0;
+ serialPortSetup.c_cc[VMIN] = 0;
+
+ // Set baud rate = 38.4kBaud
+ cfsetispeed(&serialPortSetup, B38400);
+ cfsetospeed(&serialPortSetup, B38400);
+
+ success=tcsetattr(_serialPort, TCSANOW, &serialPortSetup);
+ if(success < 0)
+ {
+ errorNumber = errno;
+ perror(0);
+ return -1;
+ }
+
+ return 0;
+}
+
+//=============================================================================
+//=============================================================================
+int SerialDownload::loadFile(const char *fileName,
+ char *&buffer,
+ int &numberOfBytes)
+{
+ FILE *path;
+
+ if((path = fopen(fileName,"rb")) == 0)
+ {
+ // Specified file not found.
+ return -1;
+ }
+
+ fseek(path, 0, 2);
+ numberOfBytes = ftell(path);
+ rewind(path);
+
+ buffer = (char*)malloc((size_t)numberOfBytes);
+ if(buffer == 0)
+ {
+ // Insufficient memory to load file.
+ fclose(path);
+ return -2;
+ }
+
+ if(fread(buffer, numberOfBytes, 1, path) != 1)
+ {
+ // Cannot read file.
+ fclose(path);
+ return -3;
+ }
+
+ fclose(path);
+ return 0;
+}
+
+//=============================================================================
+//=============================================================================
+bool SerialDownload::changeBaudRate(const int newBaudRate,
+ int& errorNumber)
+{
+ int success;
+ int baudRate;
+ struct termios setup;
+
+ switch(newBaudRate)
+ {
+ case 9600:
+ baudRate = B9600;
+ break;
+ case 19200:
+ baudRate = B19200;
+ break;
+ case 38400:
+ baudRate = B38400;
+ break;
+ case 57600:
+ baudRate = B57600;
+ break;
+ case 115200:
+ baudRate = B115200;
+ break;
+ case 230400:
+ baudRate = B230400;
+ break;
+ case 460800:
+ baudRate = B460800;
+ break;
+ default:
+ return 0;
+ break;
+ }
+
+ success = tcgetattr(_serialPort, &setup);
+ if (success < 0)
+ {
+ errorNumber = errno;
+ perror(0);
+ return 0;
+ }
+
+ cfsetispeed(&setup, baudRate);
+ cfsetospeed(&setup, baudRate);
+ success = tcsetattr(_serialPort, TCSANOW, &setup);
+ if (success < 0)
+ {
+ errorNumber = errno;
+ perror(0);
+ return 0;
+ }
+
+ return 1;
+}
+
+//=============================================================================
+//=============================================================================
+unsigned char SerialDownload::waitForReply(const int transparent)
+{
+ unsigned char c(0);
+ int numberBytes(0);
+ int reply(0);
+
+ struct pollfd commEvent;
+ commEvent.fd = _serialPort;
+ commEvent.events = POLLIN;
+
+ for(;;)
+ {
+ // Wait until a character has received.
+ do
+ {
+ reply = poll(&commEvent, 1, 1000);
+ }
+ while(reply == 0);
+
+ if(commEvent.revents == POLLIN)
+ {
+ do
+ {
+ numberBytes=read(_serialPort, &c, 1);
+ if(transparent && numberBytes)
+ {
+ cout << c;
+ cout.flush();
+ }
+ if((c == STX) ||
+ (c == ETX) ||
+ (c == BEL) ||
+ (c == ACK_OK) ||
+ (c == ACK_NOK))
+ {
+ return c;
+ }
+ }
+ while(numberBytes);
+ }
+ }
+ return 0;
+}
+
+//=============================================================================
+//=============================================================================
+int SerialDownload::connectToSimpad(const int fastBaudRate,
+ int& errorNumber)
+{
+ errorNumber = 0;
+ int bytesWritten;
+ unsigned char c;
+
+ // Switch baud rate to low connecting baud rate.
+ if(!changeBaudRate(38400, errorNumber))
+ {
+ return -1;
+ }
+
+ // Wait for character STX (02) and BEL (07)
+ while(waitForReply(1) != STX);
+ while(waitForReply(1) != BEL);
+ bytesWritten = write(_serialPort, &ACK_BD, 1);
+ if(!bytesWritten)
+ {
+ errorNumber = errno;
+ return -2;
+ }
+
+ // Send byte #2 of baud rate
+ c = (fastBaudRate>>16)&0xff;
+ bytesWritten = write(_serialPort, &c, 1);
+ if(!bytesWritten)
+ {
+ errorNumber = errno;
+ return -2;
+ }
+
+ // Send byte #1 of baud rate
+ c = (fastBaudRate>>8)&0xff;
+ bytesWritten = write(_serialPort, &c, 1);
+ if(!bytesWritten)
+ {
+ errorNumber = errno;
+ return -2;
+ }
+
+ // Send byte #0 of baud rate
+ c = fastBaudRate&0xff;
+ bytesWritten = write(_serialPort, &c, 1);
+ if(!bytesWritten)
+ {
+ errorNumber = errno;
+ return -2;
+ }
+
+ c = waitForReply(1);
+ if (c == ACK_OK)
+ {
+ // Switch baud rate to fast baud rate.
+ if(!changeBaudRate(fastBaudRate, errorNumber))
+ {
+ return -3;
+ }
+ }
+
+ // Wait for 1st character with new baud rate.
+ while(waitForReply(1) != STX);
+
+ bytesWritten = write(_serialPort, &STX, 1);
+ if(!bytesWritten)
+ {
+ errorNumber = errno;
+ return -4;
+ }
+
+ while(waitForReply(1) != STX);
+ return 0;
+}
+
+//=============================================================================
+//=============================================================================
+bool SerialDownload::sendBlock(const char *buffer,
+ const int length,
+ int& errorNumber)
+{
+ errorNumber = 0;
+ unsigned char c, check=0xff;
+ int i;
+ int bytesWritten;
+
+ while(1)
+ {
+ if(length == 512)
+ {
+ // It's a complete block.
+ bytesWritten = write(_serialPort, buffer, 512);
+ if(!bytesWritten)
+ {
+ errorNumber = errno;
+ return 0;
+ }
+ // Create checksum.
+ for(i = 0; i < 512; ++i)
+ {
+ check=(check<<1) ^ buffer[i];
+ }
+ }
+ else
+ {
+ // It's an incomplete block, which must be filled with
+ // the FILLER pattern.
+ char lastBlock[512];
+ for(i = 0; i < 512; ++i)
+ {
+ if(i < length)
+ {
+ // Create checksum.
+ check=(check<<1) ^ buffer[i];
+ lastBlock[i] = buffer[i];
+ }
+ else
+ {
+ // Create checksum
+ check=(check<<1) ^ FILLER;
+ lastBlock[i] = FILLER;
+ }
+ }
+ bytesWritten = write(_serialPort, lastBlock, 512);
+ if(!bytesWritten)
+ {
+ errorNumber = errno;
+ return 0;
+ }
+ }
+
+ while(waitForReply(1) != STX);
+
+ if(length == 512)
+ {
+ bytesWritten = write(_serialPort, &STX, 1);
+ if(!bytesWritten)
+ {
+ errorNumber = errno;
+ return 0;
+ }
+ }
+ else
+ {
+ // It was the last block.
+ bytesWritten = write(_serialPort, &ETX, 1);
+ if(!bytesWritten)
+ {
+ errorNumber = errno;
+ return 0;
+ }
+ }
+
+ // Send checksum.
+ bytesWritten = write(_serialPort, &check, 1);
+ if(!bytesWritten)
+ {
+ errorNumber = errno;
+ return 0;
+ }
+
+ // Wait for ACK_OK as confirmation. Send block again otherwise.
+ c = waitForReply(1);
+ if(c == ACK_OK)
+ {
+ // The block was successfully sent.
+ return 1;
+ }
+ }
+}
+
+//=============================================================================
+//=============================================================================
+void SerialDownload::waitForEndOfBurning(void)
+{
+ // Wait for ETX, which indicates the end of burning.
+ while(waitForReply(1) != ETX);
+
+ // Send the characters "r" (erase registry) and "o" (power off).
+ char c = 'r';
+ int bytesWritten;
+ bytesWritten = write(_serialPort, &c, 1);
+ c = 'o';
+ bytesWritten = write(_serialPort, &c, 1);
+ usleep(7000);
+}
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-13 12:38:53 +0000