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notes:code8051 [2023/08/31 08:09] – [Coding for 8051] azmannotes:code8051 [2024/11/11 11:50] (current) – removed azman
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-====== C Code(s) for 8051 ====== 
- 
-Example codes for the classical Intel-8051 (mcu51) microcontroller core. 
- 
-===== Codes for NMK322 ===== 
- 
-++++ Testing IR module and HC-SR04 ultrasonic sensor module. | 
-<file c test0.c> 
-/*----------------------------------------------------------------------------*/ 
-#include "uart.h" 
-#include "timer.h" 
-#define FPSIZE 2 
-#include "utils_float.h" 
-#define _LCD_4BIT_INTERFACE_ 
-/** DB4-DB7 => P0 (UPPER NIBBLE) */ 
-/** E => P0.2 : NEEDS -ve EDGE */ 
-/** R/W => P0.1 : 0=WR 1=RD */ 
-/** RS => P0.0 : 0=CMD 1=DAT */ 
-#include "textlcd.h" 
-/*----------------------------------------------------------------------------*/ 
-/** 
- * Testing IR module and HC-SR04 ultrasonic sensor module 
- * - display on both uart and lcd 
-**/ 
-/*----------------------------------------------------------------------------*/ 
-MY1SBIT(IRMOD,PIN10); 
-MY1SBIT(TRIG,PIN16); 
-MY1SBIT(ECHO,PIN17); 
-/*----------------------------------------------------------------------------*/ 
-MY1SBIT(TEST_IR,PIN14); 
-MY1SBIT(TEST_HC,PIN15); 
-/*----------------------------------------------------------------------------*/ 
-#define FLAG_IR 0x01 
-#define FLAG_HC 0x02 
-/*----------------------------------------------------------------------------*/ 
-void main(void) { 
- unsigned char wait; 
- unsigned int tval,loop, flag; 
- float fval, dist; 
- char buff[16]; 
- uart_init(); 
- uart_puts("\r\nTESTING NMK322 STUFFS\r\n"); 
- lcd_init(); 
- lcd_goto_line1(); 
- lcd_puts("TESTKIT 4 NMK322"); 
- timer_init(); 
- flag = 0; 
- while (1) { 
- if (TEST_IR==0) { 
- if ((flag&FLAG_IR)==0) { 
- lcd_goto_line1(); 
- lcd_puts("TEST 4 IR MODULE"); 
- uart_puts("\r\nTESTING IR MODULE\r\n"); 
- flag = FLAG_IR; 
- } 
- lcd_goto_line2(); 
- lcd_puts("                "); 
- lcd_goto_line2(); 
- lcd_puts("Waiting... "); 
- uart_puts("\r\nWaiting... "); 
- while (IRMOD); // outputs logic low when obstacle detected 
- lcd_puts("|*"); 
- uart_puts("|*"); 
- while (!IRMOD); 
- lcd_puts("|"); 
- uart_puts("|\r\n"); 
- for (loop=65000;loop;loop--); 
- } 
- if (TEST_HC==0) { 
- if ((flag&FLAG_HC)==0) { 
- lcd_goto_line1(); 
- lcd_puts("TEST HC-SR04 MOD"); 
- uart_puts("\r\nTESTING HC-SR04 MODULE\r\n"); 
- flag = FLAG_HC; 
- } 
- lcd_goto_line2(); 
- lcd_puts("                "); 
- lcd_goto_line2(); 
- timer_prep(0); 
- TRIG = 1; 
- for (wait=10;wait;wait--); // arounf 10us? 
- TRIG = 0; 
- while (!ECHO); timer_exec(); 
- while (ECHO); timer_stop(); 
- tval = ((unsigned int)TH0<<8)|TL0; 
- fval = (float)tval * 1.085; // in us 
- dist = fval / 58.0; // in cm 
- lcd_puts("Dist:"); 
- uart_puts("-- Distance="); 
- float2str(buff,dist); 
- lcd_puts(buff); 
- lcd_puts("cm"); 
- uart_puts(buff); 
- uart_puts(" cm\r\n"); 
- for (loop=65000;loop;loop--); 
- } 
- } 
-} 
-/*----------------------------------------------------------------------------*/ 
-</file> 
-++++ 
- 
-++++ Testing HC06 bluetooth module and TowerPro MG996R servo. | 
-<file c test1.c> 
-/*----------------------------------------------------------------------------*/ 
-#define BTNAME "nmk322bt" 
-#define BTPASS "0000" 
-#include "hc06.h" 
-#include "timer.h" 
-#include "utils.h" 
-/*----------------------------------------------------------------------------*/ 
-/** 
- * Testing HC06 bluetooth module and TowerPro MG996R servo 
- * - note: servo pin (1|orange:PWM)(2|red:vcc)(3|brown:ground) 
-**/ 
-/*----------------------------------------------------------------------------*/ 
-MY1SBIT(SERVO,PIN10); 
-MY1SBIT(CHECK,PIN12); 
-MY1SBIT(GO000,PIN16); 
-MY1SBIT(GO180,PIN17); 
-/*----------------------------------------------------------------------------*/ 
-void pwm_cycle(unsigned char wide) { 
- unsigned char full; 
- full = 200-wide; 
- SERVO = 1; 
- while (wide) { 
- timer_wait(0xffa3); // 0.1ms 
- wide--; 
- } 
- SERVO = 0; 
- while (full) { 
- timer_wait(0xffa3); // 0.1ms 
- full--; 
- } 
-} 
-/*----------------------------------------------------------------------------*/ 
-void servo_turn(unsigned char wide) { 
- unsigned char tlen; 
- tlen = 50; /* times 20ms? */ 
- while (tlen>0) { 
- pwm_cycle(wide); 
- tlen--; 
- } 
-} 
-/*----------------------------------------------------------------------------*/ 
-void main(void) { 
- __xdata my1atcmd_t hc06; 
- unsigned char curr; 
- SERVO = 0; CHECK = 0; GO000 = 1; GO180 = 1; 
- uart_init(); 
- timer_init(); 
- do { 
- hc06_init(&hc06); 
- } while (hc06_ok(&hc06)==0); 
- hc06_setname(&hc06); 
- hc06_setpin(&hc06); 
- CHECK = 1; 
- while (1) { 
- if (uart_peek()) { 
- if (hc06_wait(&hc06)==0) { 
- if (hc06.buff[0]=='#') { 
- curr = (unsigned char) str2uint(&hc06.buff[1]); 
- if (curr>=5&&curr<=25) { 
- uart_puts("## Turning to ("); 
- uart_puts(&hc06.buff[1]); 
- uart_puts(")\r\n"); 
- servo_turn(curr); 
- } else { 
- uart_puts("** Invalid angle ("); 
- uart_puts(&hc06.buff[1]); 
- uart_puts(")\r\n"); 
- } 
- } else { 
- uart_puts(">> "); 
- uart_puts(hc06.buff); 
- uart_puts("\r\n"); 
- } 
- } 
- } 
- if (GO000==0) { 
- servo_turn(10); // 1ms pwm 
- while (!GO000); 
- } 
- if (GO180==0) { 
- servo_turn(20); // 2ms pwm 
- while (!GO180); 
- } 
- } 
-} 
-/*----------------------------------------------------------------------------*/ 
-</file> 
-++++ 
- 
-===== Code: relay ===== 
- 
-++++ Testing basic relay. | 
-<file c relay.c> 
-/*----------------------------------------------------------------------------*/ 
-#include "timer.h" 
-#include "uart.h" 
-/*----------------------------------------------------------------------------*/ 
-MY1SBIT(DRIVE,PIN20); 
-MY1SBIT(INPUT,PIN10); 
-/*----------------------------------------------------------------------------*/ 
-void main(void) { 
- unsigned char wait; 
- timer_init(); 
- uart_init(); 
- uart_puts("\nTESTING RELAY\n"); 
- DRIVE = 1; /* active low */ 
- INPUT = 1; 
- while(1) { 
- if (INPUT==0) { 
- uart_puts("-- Switch ON... "); 
- DRIVE = 0; 
- wait = 3*TIMER_LOOP_1S; 
- do { timer_wait(TIMER_VAL50MS); } while (--wait); 
- uart_puts("OFF.\n"); 
- DRIVE = 1; 
- while (!INPUT); 
- } 
- } 
-} 
-/*----------------------------------------------------------------------------*/ 
-</file> 
-++++ 
- 
-===== Code: gtuc51 ===== 
- 
-++++ Test code for the old GTUC51B001 development board. | 
-<file c gtuc51.c> 
-/*----------------------------------------------------------------------------*/ 
-/** 
- * Demo program for gtuc51 (with io board) 
-**/ 
-/*----------------------------------------------------------------------------*/ 
-#include "adc0831.h" 
-#include "keypad_922.h" 
-#include "textlcd.h" 
-#include "utils_float.h" 
-/*----------------------------------------------------------------------------*/ 
-/** 
- * Switch & LED Interface for gtuc51 i/o board 
- *   - multiplexed (dual/purpose) 
- *   - require jumper link settings! 
-**/ 
-/** SW0, SW1 => P3.3, P3.2 - LAYOUT ERROR */ 
-__sbit __at (0xB3) SW0; 
-__sbit __at (0xB2) SW1; 
-/** LED{0-3} => P3.4-P3.7 */ 
-__sbit __at (0xB4) LED0; 
-__sbit __at (0xB5) LED1; 
-__sbit __at (0xB6) LED2; 
-__sbit __at (0xB7) LED3; 
-/** LED{RX,TX} => P3.1, P3.0 - LAYOUT ERROR */ 
-__sbit __at (0xB1) LEDRX; 
-__sbit __at (0xB0) LEDTX; 
-/** alias LEDX=-2 and LEDY=-1 (LEFT OF LED0) **/ 
-__sbit __at (0xB1) LEDX; 
-__sbit __at (0xB0) LEDY; 
-/*----------------------------------------------------------------------------*/ 
-char display[LCD_MAX_CHAR]; 
-unsigned char lcdi, loop; 
-float value; 
-keybyte_t keyin; 
-adcbyte_t check; 
-__bit adc, adcgo, left, demo; 
-/*----------------------------------------------------------------------------*/ 
-#define DEMO_IO 1 
-#define DEMO_ADC 0 
-/*----------------------------------------------------------------------------*/ 
-#define LOOP_COUNT 20 
-/*----------------------------------------------------------------------------*/ 
-/* interrupt service routine for timer0 */ 
-void timer_blink(void) __interrupt TF0_VECTOR { 
- TR0 = 0; loop--; 
- P1 = ~P1; 
- if (loop==0) { 
- if (!left) { 
- loop = LED0; LED0 = LED1; LED1 = LED2; LED2 = LED3; 
- LED3 = LEDX; LEDX = LEDY; LEDY = loop; 
- } 
- else { 
- loop = LED3; LED3 = LED2; LED2 = LED1; LED1 = LED0; 
- LED0 = LEDY; LEDY = LEDX; LEDX = loop; 
- } 
- loop = LOOP_COUNT; 
- } 
- TH0 = 0x4B; TL0 = 0xFD; TR0 = 1; /** 50ms */ 
-} 
-/*----------------------------------------------------------------------------*/ 
-/* interrupt service routine for timer1 */ 
-void timer_goadc(void) __interrupt TF1_VECTOR { 
- TR1 = 0; TH1 = 0x4B; TL1 = 0xFD; 
- if (loop>0) { 
- TR1 = 1; /** 50ms */ 
- loop--; 
- } 
- else { 
- loop = LOOP_COUNT; 
- adcgo = adc; 
- } 
-} 
-/*----------------------------------------------------------------------------*/ 
-/* interrupt service routine for int1 */ 
-void check_switch0(void) __interrupt IE1_VECTOR { 
- left = 0; 
- if (lcdi<LCD_MAX_CHAR) { 
- lcd_data(0x30); 
- lcdi++; 
- } 
-} 
-/*----------------------------------------------------------------------------*/ 
-/* interrupt service routine for int0 */ 
-void check_switch1(void) __interrupt IE0_VECTOR { 
- left = 1; 
- if (lcdi<LCD_MAX_CHAR) { 
- lcd_data(0x31); 
- lcdi++; 
- } 
-} 
-/*----------------------------------------------------------------------------*/ 
-/* main function */ 
-void main(void) { 
- /** initalize stuffs */ 
- demo = DEMO_IO; /* default... just in case */ 
- TMOD = 0x11; P1 = 0xFF; P3 = 0xFF; 
- lcd_init(); 
- lcd_goto_line1(); 
- lcd_puts("8051 Select Demo"); 
- lcd_goto_line2(); 
- lcd_puts("[SW0]IO [SW1]ADC"); 
- /* wait for user key press */ 
- while (1) { 
- if (!SW0) { 
- demo = DEMO_IO; /* demo switch, led, keypad and P1 */ 
- while(!SW0); /** wait until the user press & let go */ 
- break; 
- } 
- else if (!SW1) { 
- demo = DEMO_ADC; /* demo adc */ 
- while(!SW1); 
- break; 
- } 
- } 
- /* select! */ 
- if (demo==DEMO_IO) { 
- lcd_goto_line1(); 
- lcd_puts("MY18051 I/O DEMO"); 
- lcd_goto_line2(); 
- lcd_puts("                "); 
- lcd_goto_line2(); 
- /** set timer 0 overflow every 50ms - with interrupt handler */ 
- loop = LOOP_COUNT; lcdi = 0; left = 0; 
- P1 = 0xAA; LED0 = 0; IT0 = 1; IT1 = 1; 
- EA = 1; ET0 = 1; EX0 = 1; EX1 = 1; 
- TH0 = 0x4B; TL0 = 0xFD; TR0 = 1; 
- /** main loop */ 
- while (1) { 
- keyin = key_wait_922(); 
- if (keyin<10&&lcdi<LCD_MAX_CHAR) { /** numeric key! */ 
- lcd_data(keyin+0x30); 
- lcdi++; 
- } 
- else if(keyin==0x0F) { /** '#' key! */ 
- lcd_goto_line2(); 
- lcd_puts("HASHED!         "); 
- lcd_goto_line2(); 
- lcdi = LCD_MAX_CHAR; 
- } 
- else if(keyin==0x0E) { /** '*' key! */ 
- lcd_goto_line2(); 
- lcd_puts("                "); 
- lcd_goto_line2(); 
- lcdi = 0; 
- } 
- } 
- } 
- else { 
- lcd_goto_line1(); 
- lcd_puts("MY18051 ADC DEMO"); 
- lcd_goto_line2(); 
- lcd_puts("SW0:ADC, SW1:CLR"); 
- /* initialize adc */ 
- adc_init(); 
- adc = 0; adcgo = 0; EA = 1; 
- /** adc status indicator */ 
- LEDRX = adc; LEDTX = !adc; 
- /** main loop */ 
- while (1) { 
- if (!SW0) { 
- while (!SW0); /** wait until the user lets go */ 
- adc = !adc; 
- adcgo = adc; 
- if (!adcgo) { 
- ET1 = 0; TR1 = 0; 
- lcd_puts("*"); 
- } 
- LEDRX = adc; LEDTX = !adc; 
- } 
- else if(!SW1) { 
- while (!SW1); /** wait until the user lets go */ 
- lcd_goto_line2(); 
- lcd_puts("SW0:ADC, SW1:CLR"); 
- } 
- if (adcgo) { 
- adcgo = 0; 
- lcd_goto_line2(); 
- lcd_puts("                "); 
- /** read adc */ 
- check = adc_get_data(); 
- value = ((float) check / 255.0) * VREF; 
- lcd_goto_line2(); 
- lcd_puts("ADC: "); 
- float2str(display,value); 
- lcd_puts(display); 
- lcd_puts(" ("); 
- int2str(display,check); 
- lcd_puts(display); 
- lcd_puts(")"); 
- /** set timer 1 overflow every 50ms - with interrupt handler */ 
- ET1 = 1; TH1 = 0x4B; TL1 = 0xFD; TR1 = 1; 
- } 
- } 
- } 
-} 
-/*----------------------------------------------------------------------------*/ 
-</file> 
-++++ 
  
notes/code8051.1693440567.txt.gz · Last modified: by azman