Mikroc Serial Interrupt
Testing Pic code for I2. C MasterSlave communication. Mikroc Serial Interrupt' title='Mikroc Serial Interrupt' />I2C InterIntegrated Circuit is a short distance serial interface that requires only 2 bus lines for data transfer. It was invented by Philips in 1980s. I have now completed my I2C MasterSlave communication test. Quite happy with the results Before getting started I needed to refresh my memory on I2C protocol, how. 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. 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. For my test the Master PIC will send 1. The OV7670 is a low cost image sensor DSP that can operate at a maximum of 30 fps and 640 x 480 VGA resolutions, equivalent to 0. Megapixels. Measurement and control of temperature and relative humidity finds applications in numerous areas. These days devices are available which have both temperature and. Avobe Schematic shows the circuit of the twochannel PCbased oscilloscope. MCP6S91 from Microchip Technology is an analogue programmable gain amplifier that is well. 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. This process will be repeated 1. The next step Master PIC will request 1 byte to Slave PIC of a specific internal memory address. Please check code to see how easy it is
Note Master Pic will use I2. 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 deviceMaster 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. ICSP_18pin.png' alt='Mikroc Serial Interrupt' title='Mikroc Serial Interrupt' />RB7 pin. Pic. TX RS2. 32 outputint x BYTE result void main delayms2. NOANALOGS VSSVDD setupcomparatorNCNCNCNC setuposcillatorOSC4. Using UART of PIC Microcontroller with MPLAB XC8 compiler. Here USART module of PIC Microcontroller is configured as UART Asynchronous Full Duplex Mode. Description and C code for a PIC frequency counter operating up to about 50MHz. The project uses an HD47880 LCD for the display and uses timer 1 to count edges of the. PIC tutorial page. Here you can find tutorials on compilers, programming, specific devices, peripherals, protocols and techniques. STM32F303VC Mainstream Mixed signals MCUs ARM CortexM4 core with DSP and FPU, 256 Kbytes Flash, 72 MHz CPU, MPU, CCM, 12bit ADC 5 MSPS, PGA, comparators. 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. Utt Pre Engineering Programs. 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. How To Seal Crack In Plastic Water Tank. 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.