Library for LinkSprite Y201 JPEG serial camera.
Revision 10:fd12c96da974, committed 2012-07-20
- Comitter:
- ashleymills
- Date:
- Fri Jul 20 08:59:03 2012 +0000
- Parent:
- 9:fbd80a803857
- Commit message:
- Added change baud rate, then removed it, as this apparently reprograms the camera ROM !! Nice product linksprite
Changed in this revision
Y201.cpp | Show annotated file Show diff for this revision Revisions of this file |
Y201.h | Show annotated file Show diff for this revision Revisions of this file |
--- a/Y201.cpp Thu Jul 19 15:48:25 2012 +0000 +++ b/Y201.cpp Fri Jul 20 08:59:03 2012 +0000 @@ -1,18 +1,24 @@ #include "Y201.h" #include "rtos.h" -const int Y201::resetSeq [4] = {0x56,0x00,0x26,0x00}; -const int Y201::resetSeqAck [4] = {0x76,0x00,0x26,0x00}; -const int Y201::takePicSeq [5] = {0x56,0x00,0x36,0x01,0x00}; -const int Y201::takePicSeqAck [5] = {0x76,0x00,0x36,0x00,0x00}; -const int Y201::set160x120 [9] = {0x56,0x00,0x31,0x05,0x04,0x01,0x00,0x19,0x22}; -const int Y201::set320x240 [9] = {0x56,0x00,0x31,0x05,0x04,0x01,0x00,0x19,0x11}; -const int Y201::set640x480 [9] = {0x56,0x00,0x31,0x05,0x04,0x01,0x00,0x19,0x00}; -const int Y201::setSizeAck [5] = {0x76,0x00,0x31,0x00,0x00}; -const int Y201::readFileSize [5] = {0x56,0x00,0x34,0x01,0x00}; -const int Y201::readFileSizeAck[7] = {0x76,0x00,0x34,0x00,0x04,0x00,0x00}; -const int Y201::readFileHead [8] = {0x56,0x00,0x32,0x0C,0x00,0x0A,0x00,0x00}; -const int Y201::readFileAck [5] = {0x76,0x00,0x32,0x00,0x00}; +const char Y201::resetSeq [4] = {0x56,0x00,0x26,0x00}; +const char Y201::resetSeqAck [4] = {0x76,0x00,0x26,0x00}; +const char Y201::takePicSeq [5] = {0x56,0x00,0x36,0x01,0x00}; +const char Y201::takePicSeqAck [5] = {0x76,0x00,0x36,0x00,0x00}; +const char Y201::set160x120 [9] = {0x56,0x00,0x31,0x05,0x04,0x01,0x00,0x19,0x22}; +const char Y201::set320x240 [9] = {0x56,0x00,0x31,0x05,0x04,0x01,0x00,0x19,0x11}; +const char Y201::set640x480 [9] = {0x56,0x00,0x31,0x05,0x04,0x01,0x00,0x19,0x00}; +const char Y201::setSizeAck [5] = {0x76,0x00,0x31,0x00,0x00}; +const char Y201::readFileSize [5] = {0x56,0x00,0x34,0x01,0x00}; +const char Y201::readFileSizeAck [7] = {0x76,0x00,0x34,0x00,0x04,0x00,0x00}; +const char Y201::readFileHead [8] = {0x56,0x00,0x32,0x0C,0x00,0x0A,0x00,0x00}; +const char Y201::readFileAck [5] = {0x76,0x00,0x32,0x00,0x00}; +//const char Y201::changeBaudRateSeq [5] = {0x56,0x00,0x24,0x03,0x01}; +//const char Y201::changeBaudRateAck [5] = {0x76,0x00,0x24,0x00,0x00}; +const char Y201::enterPowerSavingSeq [7] = {0x56,0x00,0x3E,0x03,0x00,0x01,0x01}; +const char Y201::enterPowerSavingAck [5] = {0x76,0x00,0x3E,0x00,0x00}; +const char Y201::exitPowerSavingSeq [7] = {0x56,0x00,0x3E,0x03,0x00,0x01,0x00}; +const char Y201::exitPowerSavingAck [5] = {0x76,0x00,0x3E,0x00,0x00}; void Y201::trash() { // wait for trash... @@ -22,6 +28,8 @@ } bool Y201::readImage(int startAddress, int readLen, uint8_t *readBuffer) { + trash(); // camera sends random crap after sending certain responses, so need to clear it + //Thread::wait(5); putSeq(readFileHead,readFileHeadLen); putc(startAddress>>8); // Start Address MSB putc(startAddress&255); // Start Address LSB @@ -39,28 +47,25 @@ while(nread<readLen) { if(readable()) { uint8_t c = getc(); - // fprintf(stdout, "[%02x]", c); + // fprintf(stdout, "[%02x]", c); readBuffer[nread] = c; nread++; t.reset(); - } - else - { - if(t.read_ms()>3000) - { - fprintf(stdout, "Blocked!\n Missed %d bytes over %d\nLast byte read is %02x\n", readLen - nread, readLen, readBuffer[nread-1]); - return false; - } + } else { + if(t.read_ms()>3000) { + fprintf(stdout, "Blocked!\n Missed %d bytes over %d\nLast byte read is %02x\n", readLen - nread, readLen, readBuffer[nread-1]); + return false; + } } } Thread::wait(1); - } else { - return false; - } - return true; + } else { + return false; + } + return true; } -bool Y201::waitFor(const int *seq, const int seqLen) { +bool Y201::waitFor(const char *seq, const int seqLen) { int spos = 0; long timeout = 100; Timer timer; @@ -108,7 +113,7 @@ return true; } -void Y201::putSeq(const int *seq, int seqLen) { +void Y201::putSeq(const char *seq, int seqLen) { while(seqLen--) { putc(*seq++); } @@ -141,6 +146,16 @@ return waitFor(takePicSeqAck,takePicSeqAckLen); } +bool Y201::enterPowerSaving() { + putSeq(enterPowerSavingSeq,enterPowerSavingLen); + return waitFor(enterPowerSavingAck,enterPowerSavingAckLen); +} + +bool Y201::exitPowerSaving() { + putSeq(exitPowerSavingSeq,exitPowerSavingLen); + return waitFor(exitPowerSavingAck,exitPowerSavingAckLen); +} + bool Y201::readImageSize(int *fileSize) { putSeq(readFileSize,readFileSizeLen); bool ret = waitFor(readFileSizeAck,readFileSizeAckLen); @@ -166,3 +181,59 @@ } return ret; } + +/* + +THIS SIMPLY DOESN'T WORK -- Known bug, LinkSprite quality products + + +bool Y201::changeBaudRate(Y201BaudRate baudRate) { + // put the prefix + putSeq(changeBaudRateSeq,changeBaudRateSeqLen); + int br = 9600; + + // put the baud rate + switch(baudRate) { + case Y201::e9600: + putc(0xAE); + putc(0xC8); + br = 9600; + break; + + case Y201::e19200: + putc(0x56); + putc(0xE4); + br = 19200; + break; + + case Y201::e38400: + putc(0x2A); + putc(0xF2); + br = 38400; + break; + + case Y201::e57600: + putc(0x1C); + putc(0x4C); + br = 57600; + break; + + case Y201::e115200: + putc(0xAE); + putc(0xC8); + br = 115200; + break; + + default: + putc(0xAE); + putc(0xC8); + br = 9600; + break; + } + + baud(br); + + // wait for the ack + return waitFor(changeBaudRateAck,changeBaudRateAckLen); +} +*/ \ No newline at end of file
--- a/Y201.h Thu Jul 19 15:48:25 2012 +0000 +++ b/Y201.h Fri Jul 20 08:59:03 2012 +0000 @@ -1,5 +1,5 @@ #include "mbed.h" -#define MODSERIAL_DEFAULT_RX_BUFFER_SIZE 512 +#define MODSERIAL_DEFAULT_RX_BUFFER_SIZE 1024 #define MODSERIAL_DEFAULT_TX_BUFFER_SIZE 64 #include "MODSERIAL.h" #pragma once @@ -9,36 +9,60 @@ private: // serial commands to drive camera - static const int resetSeq [4]; - static const int resetSeqLen = 4; - static const int resetSeqAck [4]; - static const int resetSeqAckLen = 4; - static const int takePicSeq [5]; - static const int takePicSeqLen = 5; - static const int takePicSeqAck [5]; - static const int takePicSeqAckLen = 5; - static const int set160x120 [9]; - static const int set320x240 [9]; - static const int set640x480 [9]; - static const int setSizeLen = 9; - static const int setSizeAck [5]; - static const int setSizeAckLen = 5; - static const int readFileSize [5]; - static const int readFileSizeLen = 5; - static const int readFileSizeAck [7]; - static const int readFileSizeAckLen = 7; - static const int readFileHead [8]; - static const int readFileHeadLen = 8; - static const int readFileAck [5]; - static const int readFileAckLen = 5; + static const char resetSeq [4]; + static const int resetSeqLen = 4; + static const char resetSeqAck [4]; + static const int resetSeqAckLen = 4; + static const char takePicSeq [5]; + static const int takePicSeqLen = 5; + static const char takePicSeqAck [5]; + static const int takePicSeqAckLen = 5; + static const char set160x120 [9]; + static const char set320x240 [9]; + static const char set640x480 [9]; + static const int setSizeLen = 9; + static const char setSizeAck [5]; + static const int setSizeAckLen = 5; + static const char readFileSize [5]; + static const int readFileSizeLen = 5; + static const char readFileSizeAck [7]; + static const int readFileSizeAckLen = 7; + static const char readFileHead [8]; + static const int readFileHeadLen = 8; + static const char readFileAck [5]; + static const int readFileAckLen = 5; + /* + static const char changeBaudRateSeq [5]; + static const int changeBaudRateSeqLen = 5; + static const char changeBaudRateAck [5]; + static const int changeBaudRateAckLen = 5; + */ + static const char enterPowerSavingSeq[7]; + static const int enterPowerSavingLen = 7; + static const char enterPowerSavingAck[5]; + static const int enterPowerSavingAckLen = 5; + static const char exitPowerSavingSeq [7]; + static const int exitPowerSavingLen = 7; + static const char exitPowerSavingAck[5]; + static const int exitPowerSavingAckLen = 5; public: enum Y201ImageSize { - e160x120, - e320x240, - e640x480 + e160x120, + e320x240, + e640x480 }; + + /* + enum Y201BaudRate { + e9600, + e19200, + e38400, + e57600, + e115200 + }; + */ Y201(PinName tx, PinName rx, const char *name = NULL); @@ -46,11 +70,14 @@ bool takePicture(); bool readImageSize(int *fileSize); bool readImage(int startAddress, int readLen, uint8_t *readBuffer); + //bool changeBaudRate(Y201BaudRate baudRate); + bool enterPowerSaving(); + bool exitPowerSaving(); void trash(); bool waitForInt(int bytes, int *fileSize); - bool waitFor(const int *seq, const int seqLen); - void putSeq(const int *seq, int seqLen); + bool waitFor(const char *seq, const int seqLen); + void putSeq(const char *seq, int seqLen); bool reset(); };