mbedAvrProgrammer - AVR910 In-System Programming

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Aaron Berk / Mbed 2 deprecated mbedAvrProgrammer

AVR910 In-System Programming

AVR910.cpp@0:56d5a7ca509d, 2010-06-16 (annotated)

Committer:: aberk
Date:: Wed Jun 16 13:10:04 2010 +0000
Revision:: 0:56d5a7ca509d

Who changed what in which revision?

User	Revision	Line number	New contents of line
aberk	0:56d5a7ca509d	1	//****************************************************************************/
aberk	0:56d5a7ca509d	2	// Description:
aberk	0:56d5a7ca509d	3	//
aberk	0:56d5a7ca509d	4	// Program AVR chips with the AVR910 ISP (in-system programming) protocol,
aberk	0:56d5a7ca509d	5	// using an mbed.
aberk	0:56d5a7ca509d	6	//
aberk	0:56d5a7ca509d	7	// AVR Application Note:
aberk	0:56d5a7ca509d	8	//
aberk	0:56d5a7ca509d	9	// http://www.atmel.com/dyn/resources/prod_documents/doc0943.pdf
aberk	0:56d5a7ca509d	10	//****************************************************************************/
aberk	0:56d5a7ca509d	11
aberk	0:56d5a7ca509d	12	//****************************************************************************/
aberk	0:56d5a7ca509d	13	// Includes
aberk	0:56d5a7ca509d	14	//****************************************************************************/
aberk	0:56d5a7ca509d	15	#include "AVR910.h"
aberk	0:56d5a7ca509d	16
aberk	0:56d5a7ca509d	17	Serial debug(USBTX, USBRX);
aberk	0:56d5a7ca509d	18
aberk	0:56d5a7ca509d	19	AVR910::AVR910(PinName mosi, PinName miso, PinName sclk, PinName nReset) {
aberk	0:56d5a7ca509d	20
aberk	0:56d5a7ca509d	21	spi_ = new SPI(mosi, miso, sclk);
aberk	0:56d5a7ca509d	22	spi_->frequency(32000);
aberk	0:56d5a7ca509d	23	spi_->format(8, 1);
aberk	0:56d5a7ca509d	24	nReset_ = new DigitalOut(nReset);
aberk	0:56d5a7ca509d	25
aberk	0:56d5a7ca509d	26	}
aberk	0:56d5a7ca509d	27
aberk	0:56d5a7ca509d	28	int AVR910::program(FILE* binary) {
aberk	0:56d5a7ca509d	29
aberk	0:56d5a7ca509d	30	int response = 0;
aberk	0:56d5a7ca509d	31
aberk	0:56d5a7ca509d	32	debug.printf("mbed AVR910 Programmer starting\n");
aberk	0:56d5a7ca509d	33
aberk	0:56d5a7ca509d	34	//Enter serial programming mode by pulling reset line low.
aberk	0:56d5a7ca509d	35	*nReset_ = 0;
aberk	0:56d5a7ca509d	36
aberk	0:56d5a7ca509d	37	//Wait 20ms before issuing first command.
aberk	0:56d5a7ca509d	38	wait_ms(20);
aberk	0:56d5a7ca509d	39
aberk	0:56d5a7ca509d	40	//Issue a programming enable command.
aberk	0:56d5a7ca509d	41	response = enableProgramming();
aberk	0:56d5a7ca509d	42
aberk	0:56d5a7ca509d	43	if (response < 0) {
aberk	0:56d5a7ca509d	44	debug.printf("Enable programming command not successful\n");
aberk	0:56d5a7ca509d	45	} else {
aberk	0:56d5a7ca509d	46	debug.printf("Enable programming command successful\n");
aberk	0:56d5a7ca509d	47	}
aberk	0:56d5a7ca509d	48
aberk	0:56d5a7ca509d	49	//Read vendor code, part family and part number.
aberk	0:56d5a7ca509d	50	response = readVendorCode();
aberk	0:56d5a7ca509d	51
aberk	0:56d5a7ca509d	52	if (response == ATMEL_VENDOR_CODE) {
aberk	0:56d5a7ca509d	53	debug.printf("Microcontroller is an Atmel [0x%02x]\n", response);
aberk	0:56d5a7ca509d	54	} else if (response == DEVICE_LOCKED) {
aberk	0:56d5a7ca509d	55	debug.printf("Device is locked\n");
aberk	0:56d5a7ca509d	56	} else {
aberk	0:56d5a7ca509d	57	debug.printf("Microcontroller is not an Atmel\n");
aberk	0:56d5a7ca509d	58	}
aberk	0:56d5a7ca509d	59
aberk	0:56d5a7ca509d	60	response = readPartFamilyAndFlashSize();
aberk	0:56d5a7ca509d	61
aberk	0:56d5a7ca509d	62	if (response == 0xFF) {
aberk	0:56d5a7ca509d	63	debug.printf("Device code erased or target missing\n");
aberk	0:56d5a7ca509d	64	} else if (response == 0x01) {
aberk	0:56d5a7ca509d	65	debug.printf("Device locked\n");
aberk	0:56d5a7ca509d	66	} else {
aberk	0:56d5a7ca509d	67	debug.printf("Part family and flash size code is: 0x%02x\n", response);
aberk	0:56d5a7ca509d	68	}
aberk	0:56d5a7ca509d	69
aberk	0:56d5a7ca509d	70	response = readPartNumber();
aberk	0:56d5a7ca509d	71
aberk	0:56d5a7ca509d	72	if (response == 0xFF) {
aberk	0:56d5a7ca509d	73	debug.printf("Device code erased or target missing\n");
aberk	0:56d5a7ca509d	74	} else if (response == 0x02) {
aberk	0:56d5a7ca509d	75	debug.printf("Device locked\n");
aberk	0:56d5a7ca509d	76	} else {
aberk	0:56d5a7ca509d	77	debug.printf("Part number code is: 0x%02x\n", response);
aberk	0:56d5a7ca509d	78	}
aberk	0:56d5a7ca509d	79
aberk	0:56d5a7ca509d	80	//Clear memory contents.
aberk	0:56d5a7ca509d	81	chipErase();
aberk	0:56d5a7ca509d	82
aberk	0:56d5a7ca509d	83	char pageOffset = 0;
aberk	0:56d5a7ca509d	84	int pageNumber = 0;
aberk	0:56d5a7ca509d	85	int c = 0;
aberk	0:56d5a7ca509d	86	int highLow = 0;
aberk	0:56d5a7ca509d	87
aberk	0:56d5a7ca509d	88	while ((c = getc(binary)) != EOF) {
aberk	0:56d5a7ca509d	89
aberk	0:56d5a7ca509d	90	//Page is fully loaded, time to write it to flash.
aberk	0:56d5a7ca509d	91	if (pageOffset == (PAGE_SIZE)) {
aberk	0:56d5a7ca509d	92	writeFlashMemoryPage(pageNumber);
aberk	0:56d5a7ca509d	93	debug.printf("Page %i written\n", pageNumber);
aberk	0:56d5a7ca509d	94	pageNumber++;
aberk	0:56d5a7ca509d	95	pageOffset = 0;
aberk	0:56d5a7ca509d	96	}
aberk	0:56d5a7ca509d	97
aberk	0:56d5a7ca509d	98	//Write low byte.
aberk	0:56d5a7ca509d	99	if (highLow == 0) {
aberk	0:56d5a7ca509d	100	loadMemoryPage(WRITE_LOW_BYTE, pageOffset, c);
aberk	0:56d5a7ca509d	101	highLow = 1;
aberk	0:56d5a7ca509d	102	}
aberk	0:56d5a7ca509d	103	//Write high byte.
aberk	0:56d5a7ca509d	104	else {
aberk	0:56d5a7ca509d	105	loadMemoryPage(WRITE_HIGH_BYTE, pageOffset, c);
aberk	0:56d5a7ca509d	106	highLow = 0;
aberk	0:56d5a7ca509d	107	pageOffset++;
aberk	0:56d5a7ca509d	108	}
aberk	0:56d5a7ca509d	109
aberk	0:56d5a7ca509d	110	}
aberk	0:56d5a7ca509d	111
aberk	0:56d5a7ca509d	112	//We might have partially filled up a page.
aberk	0:56d5a7ca509d	113	writeFlashMemoryPage(pageNumber);
aberk	0:56d5a7ca509d	114
aberk	0:56d5a7ca509d	115	int success = -1;
aberk	0:56d5a7ca509d	116	success = checkMemory(pageNumber, binary);
aberk	0:56d5a7ca509d	117
aberk	0:56d5a7ca509d	118	//Leave serial programming mode by pulling reset line high.
aberk	0:56d5a7ca509d	119	*nReset_ = 1;
aberk	0:56d5a7ca509d	120
aberk	0:56d5a7ca509d	121	return success;
aberk	0:56d5a7ca509d	122
aberk	0:56d5a7ca509d	123	}
aberk	0:56d5a7ca509d	124
aberk	0:56d5a7ca509d	125	void AVR910::setFrequency(int frequency){
aberk	0:56d5a7ca509d	126
aberk	0:56d5a7ca509d	127	spi_->frequency(frequency);
aberk	0:56d5a7ca509d	128
aberk	0:56d5a7ca509d	129	}
aberk	0:56d5a7ca509d	130
aberk	0:56d5a7ca509d	131	int AVR910::enableProgramming(void) {
aberk	0:56d5a7ca509d	132
aberk	0:56d5a7ca509d	133	int response = 0;
aberk	0:56d5a7ca509d	134	int error = 0;
aberk	0:56d5a7ca509d	135
aberk	0:56d5a7ca509d	136	//Programming Enable Command: 0xAC, 0x53, 0x00, 0x00
aberk	0:56d5a7ca509d	137	//Byte two echo'd back in byte three.
aberk	0:56d5a7ca509d	138	spi_->write(0xAC);
aberk	0:56d5a7ca509d	139
aberk	0:56d5a7ca509d	140	spi_->write(0x53);
aberk	0:56d5a7ca509d	141
aberk	0:56d5a7ca509d	142	response = spi_->write(0x00);
aberk	0:56d5a7ca509d	143
aberk	0:56d5a7ca509d	144	if (response == 0x53) {
aberk	0:56d5a7ca509d	145	error = 0;
aberk	0:56d5a7ca509d	146	} else {
aberk	0:56d5a7ca509d	147	error = -1;
aberk	0:56d5a7ca509d	148	}
aberk	0:56d5a7ca509d	149
aberk	0:56d5a7ca509d	150	spi_->write(0x00);
aberk	0:56d5a7ca509d	151
aberk	0:56d5a7ca509d	152	return error;
aberk	0:56d5a7ca509d	153
aberk	0:56d5a7ca509d	154	}
aberk	0:56d5a7ca509d	155
aberk	0:56d5a7ca509d	156	void AVR910::poll(void) {
aberk	0:56d5a7ca509d	157
aberk	0:56d5a7ca509d	158	int response = 0;
aberk	0:56d5a7ca509d	159
aberk	0:56d5a7ca509d	160	do {
aberk	0:56d5a7ca509d	161	spi_->write(0xF0);
aberk	0:56d5a7ca509d	162	spi_->write(0x00);
aberk	0:56d5a7ca509d	163	spi_->write(0x00);
aberk	0:56d5a7ca509d	164	response = spi_->write(0x00);
aberk	0:56d5a7ca509d	165	} while ((response & 0x01) != 0);
aberk	0:56d5a7ca509d	166
aberk	0:56d5a7ca509d	167	}
aberk	0:56d5a7ca509d	168
aberk	0:56d5a7ca509d	169	int AVR910::readVendorCode(void) {
aberk	0:56d5a7ca509d	170
aberk	0:56d5a7ca509d	171	int response = 0;
aberk	0:56d5a7ca509d	172
aberk	0:56d5a7ca509d	173	//Issue read signature byte command.
aberk	0:56d5a7ca509d	174	//Address 0x00 is vendor code.
aberk	0:56d5a7ca509d	175	spi_->write(0x30);
aberk	0:56d5a7ca509d	176	spi_->write(0x00);
aberk	0:56d5a7ca509d	177	spi_->write(0x00);
aberk	0:56d5a7ca509d	178	response = spi_->write(0x00);
aberk	0:56d5a7ca509d	179
aberk	0:56d5a7ca509d	180	return response;
aberk	0:56d5a7ca509d	181
aberk	0:56d5a7ca509d	182	}
aberk	0:56d5a7ca509d	183
aberk	0:56d5a7ca509d	184	int AVR910::readPartFamilyAndFlashSize(void) {
aberk	0:56d5a7ca509d	185
aberk	0:56d5a7ca509d	186	int response = 0;
aberk	0:56d5a7ca509d	187
aberk	0:56d5a7ca509d	188	//Issue read signature byte command.
aberk	0:56d5a7ca509d	189	//Address 0x01 is part family and flash size code.
aberk	0:56d5a7ca509d	190	spi_->write(0x30);
aberk	0:56d5a7ca509d	191	spi_->write(0x00);
aberk	0:56d5a7ca509d	192	spi_->write(0x01);
aberk	0:56d5a7ca509d	193	response = spi_->write(0x00);
aberk	0:56d5a7ca509d	194
aberk	0:56d5a7ca509d	195	return response;
aberk	0:56d5a7ca509d	196
aberk	0:56d5a7ca509d	197	}
aberk	0:56d5a7ca509d	198
aberk	0:56d5a7ca509d	199	int AVR910::readPartNumber(void) {
aberk	0:56d5a7ca509d	200
aberk	0:56d5a7ca509d	201	int response = 0;
aberk	0:56d5a7ca509d	202
aberk	0:56d5a7ca509d	203	//Issue read signature byte command.
aberk	0:56d5a7ca509d	204	//Address 0x02 is part number code.
aberk	0:56d5a7ca509d	205	spi_->write(0x30);
aberk	0:56d5a7ca509d	206	spi_->write(0x00);
aberk	0:56d5a7ca509d	207	spi_->write(0x02);
aberk	0:56d5a7ca509d	208	response = spi_->write(0x00);
aberk	0:56d5a7ca509d	209
aberk	0:56d5a7ca509d	210	return response;
aberk	0:56d5a7ca509d	211
aberk	0:56d5a7ca509d	212	}
aberk	0:56d5a7ca509d	213
aberk	0:56d5a7ca509d	214	void AVR910::chipErase(void) {
aberk	0:56d5a7ca509d	215
aberk	0:56d5a7ca509d	216	//Issue chip erase command.
aberk	0:56d5a7ca509d	217	spi_->write(0xAC);
aberk	0:56d5a7ca509d	218	spi_->write(0x80);
aberk	0:56d5a7ca509d	219	spi_->write(0x00);
aberk	0:56d5a7ca509d	220	spi_->write(0x00);
aberk	0:56d5a7ca509d	221
aberk	0:56d5a7ca509d	222	poll();
aberk	0:56d5a7ca509d	223
aberk	0:56d5a7ca509d	224	//Temporarily release reset line.
aberk	0:56d5a7ca509d	225	*nReset_ = 1;
aberk	0:56d5a7ca509d	226	*nReset_ = 0;
aberk	0:56d5a7ca509d	227
aberk	0:56d5a7ca509d	228	}
aberk	0:56d5a7ca509d	229
aberk	0:56d5a7ca509d	230	void AVR910::loadMemoryPage(int highLow, char address, char data) {
aberk	0:56d5a7ca509d	231
aberk	0:56d5a7ca509d	232	spi_->write(highLow);
aberk	0:56d5a7ca509d	233	spi_->write(0x00);
aberk	0:56d5a7ca509d	234	spi_->write(address & 0x3F);
aberk	0:56d5a7ca509d	235	spi_->write(data);
aberk	0:56d5a7ca509d	236
aberk	0:56d5a7ca509d	237	poll();
aberk	0:56d5a7ca509d	238
aberk	0:56d5a7ca509d	239	}
aberk	0:56d5a7ca509d	240
aberk	0:56d5a7ca509d	241	void AVR910::writeFlashMemoryPage(char pageNumber) {
aberk	0:56d5a7ca509d	242
aberk	0:56d5a7ca509d	243	spi_->write(0x4C);
aberk	0:56d5a7ca509d	244	spi_->write((pageNumber >> 2) & 0x3F);
aberk	0:56d5a7ca509d	245	spi_->write((pageNumber & 0x03) << 6);
aberk	0:56d5a7ca509d	246	spi_->write(0x00);
aberk	0:56d5a7ca509d	247
aberk	0:56d5a7ca509d	248	poll();
aberk	0:56d5a7ca509d	249
aberk	0:56d5a7ca509d	250	}
aberk	0:56d5a7ca509d	251
aberk	0:56d5a7ca509d	252	char AVR910::readProgramMemory(int highLow, char pageNumber, char pageOffset) {
aberk	0:56d5a7ca509d	253
aberk	0:56d5a7ca509d	254	int response = 0;
aberk	0:56d5a7ca509d	255
aberk	0:56d5a7ca509d	256	spi_->write(highLow);
aberk	0:56d5a7ca509d	257	spi_->write((pageNumber >> 2) & 0x3F);
aberk	0:56d5a7ca509d	258	spi_->write(((pageNumber & 0x03) << 6) \| (pageOffset & 0x3F));
aberk	0:56d5a7ca509d	259	response = spi_->write(0x00);
aberk	0:56d5a7ca509d	260
aberk	0:56d5a7ca509d	261	poll();
aberk	0:56d5a7ca509d	262
aberk	0:56d5a7ca509d	263	return response;
aberk	0:56d5a7ca509d	264
aberk	0:56d5a7ca509d	265	}
aberk	0:56d5a7ca509d	266
aberk	0:56d5a7ca509d	267	int AVR910::checkMemory(int numPages, FILE* binary){
aberk	0:56d5a7ca509d	268
aberk	0:56d5a7ca509d	269	int success = 0;
aberk	0:56d5a7ca509d	270	int response = 0;
aberk	0:56d5a7ca509d	271	char c = 0;
aberk	0:56d5a7ca509d	272
aberk	0:56d5a7ca509d	273	//Go back to the beginning of the binary file.
aberk	0:56d5a7ca509d	274	fseek(binary, 0, SEEK_SET);
aberk	0:56d5a7ca509d	275
aberk	0:56d5a7ca509d	276	for(int i = 0; i < numPages; i++){
aberk	0:56d5a7ca509d	277	for (int j = 0; j < PAGE_SIZE; j++) {
aberk	0:56d5a7ca509d	278	c = getc(binary);
aberk	0:56d5a7ca509d	279	//Read program memory low byte.
aberk	0:56d5a7ca509d	280	response = readProgramMemory(READ_LOW_BYTE, i, j);
aberk	0:56d5a7ca509d	281	//debug.printf("Low byte: 0x%02x\n", response);
aberk	0:56d5a7ca509d	282	if( c != response ){
aberk	0:56d5a7ca509d	283	debug.printf("page %i low byte %i: 0x%02x\n", i, j, response);
aberk	0:56d5a7ca509d	284	debug.printf("correct byte is 0x%02x\n", c);
aberk	0:56d5a7ca509d	285	success = -1;
aberk	0:56d5a7ca509d	286	}
aberk	0:56d5a7ca509d	287
aberk	0:56d5a7ca509d	288	c = getc(binary);
aberk	0:56d5a7ca509d	289	//Read program memory high byte.
aberk	0:56d5a7ca509d	290	response = readProgramMemory(READ_HIGH_BYTE, i, j);
aberk	0:56d5a7ca509d	291	//debug.printf("High byte: 0x%02x\n", response);
aberk	0:56d5a7ca509d	292	if( c != response ){
aberk	0:56d5a7ca509d	293	debug.printf("page %i high byte %i: 0x%02x\n", i, j, response);
aberk	0:56d5a7ca509d	294	debug.printf("correct byte is 0x%02x\n", c);
aberk	0:56d5a7ca509d	295	success = -1;
aberk	0:56d5a7ca509d	296	}
aberk	0:56d5a7ca509d	297	}
aberk	0:56d5a7ca509d	298	}
aberk	0:56d5a7ca509d	299
aberk	0:56d5a7ca509d	300	return success;
aberk	0:56d5a7ca509d	301
aberk	0:56d5a7ca509d	302	}

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	16 Jun 2010
Imports:	71
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	1

AVR910.cpp@0:56d5a7ca509d, 2010-06-16 (annotated)

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