Robo India presents the fundamentals of Embedded 'C' Language.Embedded C is very useful to make autonomous robots, embedded system projects, electronics projects, physical computing projects.If you have any query please share your query and views with us. we are found atwebsite: http://roboindia.commail: [email protected]
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ROBO INDIApresentsBasics of Embedded C LanguageEmail :
[email protected] : www.roboindia.comPhase 1 | Fundamentals of
Embedded Cwww.roboindia.comBenefits of C language: Easier and less
time consuming Easier to modify and update. Codes available in
function libraries. Portable
Phase 1 | Fundamentals of Embedded Cwww.roboindia.com Variables
unsigned int x;x = 10;
Data TypeSize in BitsData Range/ UsageUnsigned char8 - bit0 to
255Signed char8 - bit-128 to +127Unsigned int16 - bit0 to
65535Signed int16 - bit-32768 to 32767sbit1 - bitSFR bit
addressable onlybit1 - bitRAM bit addressable onlysfr8 - bitRAM
addresses 80- FFH onlyPhase 1 | Fundamentals of Embedded
Cwww.roboindia.com Constant a=20;
#define delay_time 184
Bit Addressable I/O Programming
sbit mybit = P1^5;
Phase 1 | Fundamentals of Embedded Cwww.roboindia.com HEX
Numbers in C
P1 = 0x10; (10 in HEX is 16 in decimal)
P2 = 0xFF; (Set all bits of port 2 to 11111111 or decimal
255)
Phase 1 | Fundamentals of Embedded Cwww.roboindia.com Bit-Wise
Operations in 8051-C AND OREX-ORInverterA
BA&BA|BA^BX=~B000001010110100111111100Phase 1 | Fundamentals of
Embedded Cwww.roboindia.com Bit-Wise Logic Operators in C
P0 = 0x35 & 0x0F; // ANDing, now P0=0x05 P1 = 0x04 | 0x68;
// ORing, now P1=0x6C
Bit-Wise Shift Operators in C1. shift right (>>)2. shift
left ( 3; // shifting right 3 times, now P1=0x13 P2 = 0x77
