File content as of revision 18:2a1d75bc8ebc:

/*
 * mbed Application program
 * Data logging & Monitor program for only LPC1114FN28 
 *
 *  Copyright (c) 2010-2014 Kenji Arai / JH1PJL
 *  http://www.page.sannet.ne.jp/kenjia/index.html
 *  http://mbed.org/users/kenjiArai/
 *      Created:  May  	    15th, 2010
 *		Spareted: June		25th, 2014		mon() & mon_hw()
 *      Revised:  August    12th, 2014
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
 * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

//  Include ---------------------------------------------------------------------------------------
#include "mbed.h"
#include "m41t62_rtc.h"			// Own lib. / RTC control
#include "AT24C1024.h"			// Own lib. / EEPROM control
#include "dt_log.h"

//  Object ----------------------------------------------------------------------------------------
Serial pc(dp16,dp15);
extern I2C    xi2c(dp5,dp27);	// SDA, SCL
extern M41T62 xm41t62(xi2c);	// STmicro RTC(M41T62)
AT24C1024   at24c1024(xi2c);    // Atmel 1Mbit EE-PROM 

//  Definition ------------------------------------------------------------------------------------
#define BAUD(x)         		pc.baud(x)
#define GETC(x)         		pc.getc(x)
#define PUTC(x)					pc.putc(x)
#define PRINTF(...)     		pc.printf(__VA_ARGS__)
#define READABLE(x)     		pc.readable(x)

// EEPROM
#define EEP_TOP					0x0

//  RAM -------------------------------------------------------------------------------------------
char linebuf[64];
int buf_size = sizeof(linebuf);

// 	for EEPROM control
int16_t read_pointer;

typedef struct {
    uint16_t    head;
    uint16_t    tail;
} ring_t;

union _inf{
	uint8_t buf_pointer[PTR_SIZE];
	ring_t log_inf;
}inf;

typedef struct {
	uint32_t	time;
	uint16_t	vcc;
	uint16_t	baro;
	int16_t		b_temp;
	uint16_t	humi;
	int16_t		h_temp;
	uint16_t	lux;
}one_log;		// 16 bytes total

union _one{
	uint8_t bf[PKT_SIZE];
	one_log lg;
}one;

extern float baro;
extern float baro_temp;
extern float cal_vcc;
extern float lux;
extern float humidity;
extern float humidity_temp;
extern float lux;

//  ROM / Constant data ---------------------------------------------------------------------------
static char *const mon_msg = "Monitor for mbed system, created on "__DATE__"";

//                      $, 2014/6/29,12:43:16,3.293,1004.5,+29.3,45.8,+29.2,1234,*
char *const log_head = "$,YYYY/MM/DD,HH:MM:SS,Vcc  ,Press ,Temp ,Humi,Temp ,Lux  ,*";
char *const msg_emty = "Data empty";
char *const msg_end  = "\r\nreach to end";

//  Function prototypes ---------------------------------------------------------------------------
extern void mon_hw(void);

//-------------------------------------------------------------------------------------------------
//  Control Program
//-------------------------------------------------------------------------------------------------
//  Put \r\n
void put_rn ( void ){	PUTC('\r');		PUTC('\n');}

//  Put \r
void put_r ( void ){	PUTC('\r');}

// Put ", "
void put_lin ( void ){	PRINTF(", ");}

// Put space n
void put_spc( uint8_t n){	for(;n > 0; n--){ PUTC(' '); }}

//  Change string -> integer
int xatoi (char **str, unsigned long *res){
unsigned long val;
unsigned char c, radix, s = 0;

    while ((c = **str) == ' ') (*str)++;
    if (c == '-') {
        s = 1;
        c = *(++(*str));
    }
    if (c == '0') {
        c = *(++(*str));
        if (c <= ' ') {	*res = 0;	return 1; }
        if (c == 'x') {
            radix = 16;
            c = *(++(*str));
        } else {
            if (c == 'b') {
                radix = 2;
                c = *(++(*str));
            } else {
                if ((c >= '0')&&(c <= '9')){	radix = 8;
                }	else {   return 0;}
            }
        }
    } else {
        if ((c < '1')||(c > '9')){	return 0;}
        radix = 10;
    }
    val = 0;
    while (c > ' ') {
        if (c >= 'a') c -= 0x20;
        c -= '0';
        if (c >= 17) {
            c -= 7;
            if (c <= 9) return 0;
        }
        if (c >= radix) return 0;
        val = val * radix + c;
        c = *(++(*str));
    }
    if (s) val = -val;
    *res = val;
    return 1;
}

//-------------------------------------------------------------------------------------------------
// Data Logging / Save into EEPROM
//-------------------------------------------------------------------------------------------------
/*
    head = H, tail =T
	state 1:	H=1(RING_TOP),T=1(RING_TOP)	-> just after Clear command
	state 2:	H=1,T=n		-> n = 2 to RING_TAIL-1 (not filled yet)	
	state 3:	H=1,T=RING_TAIL	-> need to check!!!! (just filled)
	state 4:	H=2,T=1(RING_TOP) -> start ringed state
	state 5:	H=n,T=n-1	-> n = 2 to RING_TAIL-1 (ringed)
	state 6:	H=RING_TAIL,T=RING_TAIL-1 -> need to check!!!!!
	state 7:	H=1(RING_TOP),T=RING_TAIL -> need to check!!!!!
	state 8:	same as "state 5"	
		-> Need to check state 3,6,7
*/
//  Make one data packet data structure
void dtlog_data_pack(void){
struct tm t;

    xm41t62.read_rtc_std(&t);
    one.lg.time = mktime(&t);
    one.lg.vcc = (uint16_t)(cal_vcc * 1000);
    one.lg.baro = (uint16_t)(baro * 10);
    one.lg.b_temp = (int16_t)(baro_temp * 10);
    one.lg.humi = (uint16_t)(humidity * 10);
    one.lg.h_temp = (int16_t)(humidity_temp * 10);
    one.lg.lux = (uint16_t)lux;
}

//  Print one packet as normalized data
void print_one_block_data(void){
struct tm *t;
time_t seconds;
uint16_t dt0;
int16_t dt1;

    put_rn();
    PUTC( '$' );
    //--- Time
    seconds = one.lg.time;
    t = localtime(&seconds);
	PRINTF(",%04d/%02d/%02d,%02d:%02d:%02d,",
			t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec);
	//--- Vcc
	dt0 = one.lg.vcc;
	PRINTF("%01d.%03d,", dt0/1000, dt0%1000);
	//--- Pressure
	dt0 = one.lg.baro;
	PRINTF("%04d.%01d,", dt0/10, dt0%10 );
	//--- Temp.
	dt1 = one.lg.b_temp;
	PRINTF("%\+-03d.%01d,", dt1/10, abs(dt1)%10 );
	//--- Humidity	   
	dt0 = one.lg.humi;
	PRINTF("%02d.%01d,", dt0/10, dt0%10 );
	//--- Temp.
	dt1 = one.lg.h_temp;
	PRINTF("%\+-03d.%01d,", dt1/10, abs(dt1)%10 );
	//--- Lux
	dt0 = one.lg.lux;
	PRINTF("%05d,*", dt0);
}

// Read buffer pointer
static void dtlog_pointer_read(void){
uint8_t i;
uint8_t *addr;

    /* Read EEPROM and save to buf_pointer[] */
    for ( i = 0; i < PTR_SIZE; i++ ){
        addr = (uint8_t *)(EEP_TOP + i);
        inf.buf_pointer[i]  = at24c1024.read((int)addr);
        wait(0.002);
    }
}

//  Write one packet
void dtlog_one_write(void){
uint8_t i;
uint8_t *addr;

    // Read EEPROM buffer pointer to RAM
    for ( i = 0; i < PTR_SIZE; i++ ){
        addr = (uint8_t *)(EEP_TOP + i);
        inf.buf_pointer[i]  = at24c1024.read((int)addr);
        wait(0.002);
    }
    // Write data_pack[] into  EEPROM
    for (i = 0; i < PKT_SIZE; i++){
        addr = (uint8_t *)(EEP_TOP + (inf.log_inf.tail * PTR_SIZE) + i); 
        at24c1024.write((int)addr, one.bf[i]);
        wait(0.008);
    }
    // Increment buffer pointer in RAM
    if (inf.log_inf.head == RING_TOP){	// check state 1,2,3
    	if (inf.log_inf.tail == RING_TAIL){	// check state 3
			inf.log_inf.tail = RING_TOP;		// set state 4
			inf.log_inf.head = 2;				// missing one oldest data
		} else {
			inf.log_inf.tail++;					// set state 2
		}
    } else {	// check state 4,5,6,7
    	if (inf.log_inf.head == RING_TAIL){ // check state 6
    		inf.log_inf.head = RING_TOP; 	// set state 7
    		inf.log_inf.tail = RING_TAIL;
    	} else if (inf.log_inf.tail == inf.log_inf.head - 1){ // check state 4,5
			++inf.log_inf.tail;		// continue state 5
			++inf.log_inf.head;
		}
    }
    // Write buffer pointer into EEPROM  
    for (i = 0; i < PTR_SIZE; i++){
        addr = (uint8_t *)(EEP_TOP + i);    
        at24c1024.write((int)addr, inf.buf_pointer[i]);
        wait(0.008);
    } 
}

// Read some block from buffer
void dtlog_block_read(int16_t *pt, uint16_t n){
uint8_t i;
uint8_t *addr;
uint16_t num;

    dtlog_pointer_read();
    if (inf.log_inf.tail == inf.log_inf.head){ // Check pointer
        PRINTF(msg_emty);
        put_rn();
        return;
    }
	PRINTF("Head:%d, Tail:%d, Start pointer:%d, Number of data:%d\r\n",
			inf.log_inf.head, inf.log_inf.tail, *pt, n);
    PRINTF( log_head );
    for (num = 0; num < n; num++){
        /* Read EEPROM and save to data_pack[] */
        for (i = 0; i < PKT_SIZE; i++){
            addr = (uint8_t *)(EEP_TOP + (*pt * PTR_SIZE) + i);
            one.bf[i]  =at24c1024.read((int)addr);
            wait(0.002);
        }
        print_one_block_data();
        if (READABLE()){	GETC(); break;}
        wait(0.001);
	    if (inf.log_inf.head == RING_TOP){	// check state 1,2,3
	        *pt += 1;
	        if (*pt >= inf.log_inf.tail){ // check state 2,3
	        	PRINTF(msg_end);
            	break;
            }
	    } else {	// state 4,5,6,7
	    	if (inf.log_inf.head == RING_TAIL){ // check state 6
	    		if (inf.log_inf.tail == RING_TAIL -1){ // check state 6
	    			if (*pt == RING_TAIL){ // same as  :pt += 1
	    				*pt = RING_TOP;
	    			} else { // next read
				    	*pt += 1;
				        if (*pt >= inf.log_inf.tail){
				        	PRINTF(msg_end);
			            	break;
		            	}
		            }
	    		}
	    	} else if (inf.log_inf.tail == inf.log_inf.head - 1){ // check state 5
		    	*pt += 1;
		    	if (*pt > RING_TAIL){ // same as  :pt += 1
		    		*pt = RING_TOP;
		    	} else if (*pt == inf.log_inf.tail){ // reach to end
		        	PRINTF(msg_end);
	            	break;
            	}
			}
	    }
    }
    put_rn();
}

//  Clear all buffer
void dtlog_clear_all_buff(void){
uint8_t i;
uint8_t *addr;

    /* Set initial data */
	inf.log_inf.head = inf.log_inf.tail = RING_TOP;  
    /* Write buffer pointer */
    for (i = 0; i < PTR_SIZE; i++){
        addr = (uint8_t *)(EEP_TOP + i);
        at24c1024.write((int)addr, inf.buf_pointer[i]);
        wait(0.008);
    }
}

// EEPROM buffer occupation
uint16_t dtlog_buf_occupation(void){
uint16_t i = 0;
uint16_t dt = 0;
uint8_t *addr;

    // Read EEPROM buffer pointer to RAM
    for ( i = 0; i < PTR_SIZE; i++ ){
        addr = (uint8_t *)(EEP_TOP + i);
        inf.buf_pointer[i]  = at24c1024.read((int)addr);
        wait(0.002);
    }
    // check buffer pointer
    if (inf.log_inf.head == inf.log_inf.tail){
        PRINTF(msg_emty);
        put_rn();
        return 0;
    }
    if (inf.log_inf.head == RING_TOP){	// check state 1,2,3
    	dt = inf.log_inf.tail - inf.log_inf.head;
    } else {	// state 4,5,6,7
    	if (inf.log_inf.head == RING_TAIL){	// check state 6
    		if (inf.log_inf.tail == RING_TAIL - 1){	// check state 6
			    dt = inf.log_inf.tail - RING_TOP + 1;
    		}
    	} else if (inf.log_inf.tail == inf.log_inf.head - 1){ // check state 4,5
			dt = RING_TAIL;
		} else {	// error
		    dt = 0;
		}
    }
    return dt;
}

//  Read block number
void dtlog_num_of_block(void){
uint16_t dt;

	dt = dtlog_buf_occupation();
	if (dt == 0){
		PRINTF(msg_emty);
    } else {
	    PRINTF("Number of data = %d", dt);    
	    put_rn();
	    dt = (uint16_t)(((uint32_t)dt * 1000 )/ (BLK_NO - 2));
	    PRINTF("EEPROM Occupation = %d.%01d%%", dt / 10, dt % 10);
    }
    put_rn();
}

//-------------------------------------------------------------------------------------------------
//	Monitor
//-------------------------------------------------------------------------------------------------
//  Help Massage
void msg_hlp (void){
    PRINTF(mon_msg);						put_rn();
    PRINTF("d - Data logger");				put_rn();
    PRINTF("t - Check and set RTC");		put_rn();
#if 0
    PRINTF("x - Goto HW monitor");			put_rn();
#endif
    PRINTF("q - Return to main");			put_rn();
}

//  Get key input data
void get_line (char *buff, int len){
char c;
int idx = 0;

    for (;;) {
        c = GETC();
        //    Added by Kenji Arai / JH1PJL   May 9th, 2010
        if (c == '\r') {
            buff[idx++] = c;
            break;
        }
        if ((c == '\b') && idx) {
            idx--;
            PUTC(c);
            PUTC(' ');
            PUTC(c);
        }
        if (((uint8_t)c >= ' ') && (idx < len - 1)) {
            buff[idx++] = c;
            PUTC(c);
        }
    }
    buff[idx] = 0;
    PUTC('\n');
}


// RTC related subroutines
void chk_and_set_time(char *ptr){
unsigned long p1;
struct tm t;

	if (xatoi(&ptr, &p1)){
		t.tm_year		= (uint8_t)p1 + 100;
		PRINTF("Year:%d ",p1);
		xatoi( &ptr, &p1 );
		t.tm_mon		= (uint8_t)p1 - 1;
		PRINTF("Month:%d ",p1);
		xatoi( &ptr, &p1 );
		t.tm_mday		= (uint8_t)p1;
		PRINTF("Day:%d ",p1);
		xatoi( &ptr, &p1 );
		t.tm_hour		= (uint8_t)p1;
		PRINTF("Hour:%d ",p1);
		xatoi( &ptr, &p1 );
		t.tm_min    	= (uint8_t)p1;
		PRINTF("Min:%d ",p1);
		xatoi( &ptr, &p1 );
		t.tm_sec 		= (uint8_t)p1;
		PRINTF("Sec: %d \r\n",p1);
		xm41t62.write_rtc_std(&t);
	}
    xm41t62.read_rtc_std(&t);
    // Show Time with several example
    // ex.1
    PRINTF("Date: %04d/%02d/%02d, %02d:%02d:%02d\r\n",
    		t.tm_year + 1900, t.tm_mon + 1, t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec);
#if 0
time_t seconds;
char buf[40];
	
	seconds = mktime(&t);
    // ex.2
    strftime(buf, 40, "%x %X", localtime(&seconds));
    PRINTF("Date: %s\r\n", buf);
    // ex.3
    strftime(buf, 40, "%I:%M:%S %p (%Y/%m/%d)", localtime(&seconds));
    PRINTF("Date: %s\r\n", buf);
    // ex.4
    strftime(buf, 40, "%B %d,'%y, %H:%M:%S", localtime(&seconds));
    PRINTF("Date: %s\r\n", buf);
#endif
}

//	Data Logger / Check status and Output data
static void data_logger(char *ptr){
char c;
unsigned long dt;
uint16_t n;
char *const Msg  = "Data Logger Mode, ?[Help]";

	PRINTF(Msg);
	put_rn();
	/* Get EEPROM resource */
	dtlog_pointer_read();
	dt = inf.log_inf.head;
	while (1){
		/* Get EEPROM resource */
		dtlog_pointer_read();
		PRINTF("DL>");
        ptr = linebuf;
        get_line(ptr, buf_size);
		switch (*ptr++) {
			case 'a' :
				put_r();
				read_pointer = inf.log_inf.head;
				n = dtlog_buf_occupation();
				dtlog_block_read(&read_pointer, n);
				break;
			case 'c' :	// Clear data
				put_r();
				PRINTF("Delete all data?");
				put_rn();
				PRINTF("Enter y/n (n-cancel)");
				put_rn();
				c = GETC();
				PUTC(c);
				put_rn();
				if (c == 'y'){
					PRINTF("Cleared all logging data");
					dtlog_clear_all_buff();
				} else {
					PRINTF("Canceled");
				}
				put_rn();
				break;
			case 'd' :	// d <pointer> [<count>] - Dump buffer
				put_r();
				if (xatoi(&ptr, &dt)){	read_pointer = (uint16_t)dt;
				} else {				read_pointer = inf.log_inf.head; }	
				if (xatoi(&ptr, &dt)){	n = (uint8_t)dt;				
				} else {				n = BLK_SIZE; }
				if (read_pointer == 0){ read_pointer = 1;}
				dtlog_block_read(&read_pointer, n);
				break;
			case 0x0d :	// CR
				put_r();
				dtlog_block_read(&read_pointer, BLK_SIZE);
				break;
			case 'b' :	// Back
				put_r();
				read_pointer -= (BLK_SIZE * 2);
				if (read_pointer <= 0){ read_pointer = 1;}
				dtlog_block_read(&read_pointer, n);
				break;
			case 'n' :
			case 's' :	// Status
				put_r();
				dtlog_num_of_block();
				break;
			case 'q' :	// exit
				linebuf[0] = 0;
				return;
			case '?' :
				put_r();
			    PRINTF("d - <pointer> [<count>] Dump one block data");	put_rn();
			    PRINTF("a - Dump all log data");		put_rn();
			    PRINTF("c - Clear log data");			put_rn();
			    PRINTF("s - Logger status");			put_rn();
			    PRINTF("q - Exit DL mode");				put_rn();  
				break;
			default:
				put_r();
				PUTC('?');
				put_rn();
				break;
		}
	}
}

// ---------- Program starts here! ---------------------------------------------------------------
int mon(void) {
char *ptr;

    BAUD(9600);
    put_rn();
    put_rn();
    PRINTF("%s [Help:'?' key]", mon_msg);
    put_rn();
    for (;;) {
        put_r();
        PUTC('>');
        ptr = linebuf;
        get_line(ptr, sizeof(linebuf));
        switch (*ptr++) {
    //---------------------------------------------------------------------------------
    //  check and set RTC
    //---------------------------------------------------------------------------------
        case 't' :
        	put_r(); 
            chk_and_set_time(ptr);               
            break;
    //---------------------------------------------------------------------------------
    //  check EEPROM status
    //---------------------------------------------------------------------------------
        case 'd' :
        	put_r(); 
            data_logger(ptr);               
            break;
    //---------------------------------------------------------------------------------
    //  help
    //---------------------------------------------------------------------------------
        case '?' :
        	put_r(); 
            msg_hlp();                 
            break;
#if 0
    //---------------------------------------------------------------------------------
    //  Go to special command
    //---------------------------------------------------------------------------------
        case 'x' :    // 
            mon_hw();
            PRINTF("->Came back monitor\r\n");            
            break;
#endif
    //---------------------------------------------------------------------------------
    //  Go back to main()
    //---------------------------------------------------------------------------------
        case 'q' :        // Quit
            PRINTF("\rReturn to main\r\n");
            PRINTF("cannot control anymore from here\r\n");
            return 0;
        }
    }
}