16F628a Simple Program In C
Testing Pic code for I2. C MasterSlave communication. I have now completed my I2. C MasterSlave communication test. Quite happy with the results Before getting started I needed to refresh my memory on I2. C protocol, how Master and Slave devices would communicate, how data flow between devices. Found this nice tutorial on the web http www. As I previously referred on other posts, the PIC 1. F6. 90 will now support I2. C protocol by hardware for the slave device, meaning that Interrupt Service Routine will be available, serving I2. C Master whenever necessary without the necessity to pool the I2. C bus. This also will permit Slave PIC to run other tasks like acquiring data from Analog to Digital inputs, control outputs, read inputs, etc, and still server PIC Slave without causing any delay on I2. C bus. Unfortunately I2. C Master is not supported by hardware for this PIC I2. C Master mode is also supported, please check datasheet http ww. 8 Bit Pcm Mono Wav File Download here. Device. Doc4. 12. E. pdf page 1. 97 1. Master Mode. Not a problem, Master PIC will receive commands from PC Via RS2. For the test Ive used 2 PICs 1. F6. 90 4. Mhz and 1 RS2. Master PIC will connect to Lab PC by RS2. COM1 for debugging purpose and to Slave PIC by I2. C bus. Just picked some examples for I2. C communication and found the most common example how to communicate with IC2 eeprom and decided to simulate this with my PICs. Picbased applications westford microsystems, Westford microsystems westford, vermont, usa projects using microchip pic mcus written in and featuring ccs c code. LCD Display with Green Blue Backlight 1x PIC16F628A Programmed Microcontroller 1x LM311 IC 1x Accurate LC Meter PCB with red solder mask. C DL4YHF Display Three Variants Check Out the FT7 Buffer Display Driver Requirements Wolfgang Buescher DL4YHF designed an interesting and accurate 6 digit. Services Pro Musiques Publications Connectique Electronique Logiciels Divers Contacts Liens Glossaire Historique. Electronique Ralisations. For my test the Master PIC will send 1. Slave PIC that will store in memory for later request. Before sending data Master PIC need to address the bus with the Slave ID and after this will send the 2 bytes. The 1st byte will be interpreted by Slave PIC has internal memory address and the 2nd byte has generic data. Change Imei Iphone 4S Download Problems on this page. This process will be repeated 1. The next step Master PIC will request 1 byte to Slave PIC of a specific internal memory address. Ok, so suddenly printf is not working in AVR studio, i dont know what happened, this is the code, but it doesnt output anything to the debug window include ltavrio. Thats very interesting. LED Panel is always to one direction. Download Firmware and circuit T he following packages include circuit and firmware. Firmware is the software which going to be burn into programmers microcontroller. F628a Simple Program In C' title='16F628a Simple Program In C' />Please check code to see how easy it is Note Master Pic will use I2. Here is 0 to 99 minutes relay timer using PIC16F628 microcontroller and 16 character LCD display. The microcontroller is PIC16F628A running at 4. MHz clock using an. C master mode emulated by software, using CCSInfo internal routines and so it should be expected that pins from Master and Slave device to be different The main objective robot infrastructure was only to get the PIC 1. F6. 90 I2. C Slave mode working with the hardware, I2. C Master mode would then be implemented by a bigger PIC such as 1. F8. 77. During the tests decided to use the same pic to make it a bit simpler and focus the work on the Slave device Master PIC include lt 1. F6. 90. h use delayclock4. NOWDT, HS, PUT, NOPROTECT, BROWNOUT, MCLR, NOCPDuse i. Master, sdaPINC2, sclPINC3 I2. C by softwareuse rs. N, xmitPINB7, rcvPINB5, bits8, errors PORTC. RC2 pin. 14 I2. C SDA I2. C Serial Data PORTC. RC3 pin. 7 I2. C SCL I2. C Serial Clock PORTB. RB5 pin. 12 Pic. RX RS2. 32 input PORTB. RB7 pin. 10 Pic. TX RS2. 32 outputint x BYTE result void main delayms2. NOANALOGS VSSVDD setupcomparatorNCNCNCNC setuposcillatorOSC4. MHZ settrisa0b. Port B 0. Bit. 57 RS2. 32 Rxtx settrisc0b. I2. C Master Startedrn debug to PC serial port RS2. PINC6 Led for visual debug delayms5. PINC6 delayms5. PINC6 forx0 xlt 1. I2. C protocol i. A0 slave device address i. I2. C protocol i. A1 slave device address result i. Resultddrn,x,result debug data delayms5. A0 i. 2cwrite 5 request slave internal memory address 00. A1 result i. Read. Address5drn,result delayms5. Slave PIC include lt 1. F6. 90. h use delayclock4. NOWDT, HS, PUT, NOPROTECT, BROWNOUT, MCLR, NOCPDuse i. SLAVE, SDAPINB4, SCLPINB6, address0x. A0, FORCEHW I2. C by Hardware PORTC. RC2 pin. 14 I2. C SDA I2. C Serial Data PORTC. RC3 pin. 7 I2. C SCL I2. C Serial ClockBYTE incoming, state I2. C vars. BYTE address, buffer01. Address and Array of BytesINTSSPvoid sspinterupt state i. Master is sending data ifstate 0 ifstate 1 First received byte is address incoming i. Second received byte is data incoming i. Master is requesting data i. NCNCNCNC setupvrefFALSE settrisA 0b. Port A 1. 11. 11. B 0b. 01. 11. 11. Port B 0. 01. 10. Bit. 57 RS2. 32 Rxtx settrisC 0b. Port C 1. 11. 11. INTSSP enableinterruptsGLOBAL whileTRUE main code here PC Serial Port output Master PIC Debug. I2. C Master Started Result01. Result11. Result21. Result31. Result41. Result51. Result69. Result78. Result87. Result96. Result1. Result1. Result1. Result1. Result1. Result1. Read. Address51. After this successfully test only need to make one more before getting the modules all together. Still need to test how to make PWM pulse available on 2 distinct outputs to control H Bridge. I need to switch between outputs in order to change engine direction.