Matrix user forums

Dear Enrique

Initilising the SIM800L gives directly code 255 (no reply). What does it means? No good communication between the microchip and the SIM800L? Or can there be an other reason?

Kind regards

Jan

Hi Martin,

I will try it.

Thanks

Jan

I used the simple flowcode from Enrique SIM800_HOLA.fcfx. But initialising the GSM module SIM800L gives the message "No reply"(255). The red LED on the GSM module stays flickering. Has someone an idea what is wrong? I used a SIM card from my mobile phone, which needs in the phone a code. Is that a s...

Hi Martin, I changed the exchange of information between the microchip and the phone. Now in principal, only data (strings) will be send from the microchip to the phone. But what I see on the phone is that strings are combined together. E.g. I send 100 and sometime later 110. That will be shown on t...

I think I get a little bit older. I forgot to exchange the Rx and Tx pins of the microchip and the bluetooth unit. Now it works fine.

Kind regards

Jan

In the connections of a microchip to a cellular phone, there are two important issues: 1) Connection between the cellular phone and the Bluetooth unit. If not connected the red LED on the Bluetooth unit is flashing. If connected the red LED is continuously on. 2) the connection between the microchip...

I made a small extension to the android aia and apk file: apk_extension.jpg that means directly after the bluetooth has been connected a "s" character will be send to the microchip. Therefor I extended Martin's flowcode file UPF2.fcfx file into UPF_1847_V2.fcfx file with a while loop waiting for thi...

Hi Ben, That works OK now. The timer0 works correctly. But the timer1 was a factor 4 times faster as expected. The problem could be solved by changing the clock source from Fosc to Fosc/4. But flowcode showed in both cases the same frequency. In case Fosc will be choosen, the frequency must be 61.03...

I use the Timer0 with a very low frequency of 134 seconds. In the simulation it works fine, but with the microchip I get only 2 seconds, see flowcode.
Who can help me?

Kind regards

Jan

In the meanwhile I found the solution. All real numbers have positive rounding errors, while 1.4 has been calculated with an negative error with results 1.399...... The 3 lift characters will result into 1.3 instead of 1.4

Kind regards

Jan

I have a simple counter from 1 to 20. But I need the counter diviede by 10. Counter is A_byte and the 10th part is A_real. The simulation works correctly. But the microchip has different ideas about this 'problem'. All numbers are correct, except A_byte=14 and A_real should be 1.4. The reality is, s...

Scrolling in a macro with PAGE UP and PAGE DOWN does not work with my Flowcode 8.2.

Kind regards

Jan

Using 2 bytes words like Uint (0 to 65535) and Int (-32768 to 32767) special care has to be taken if the low- and high byte are needed. This is e.g. in case of using EEPROM (with only bytes). Say the 2 bytes variable is A and the low byte is A_low and the high byte is A_high. 1) To find the low- and...

Clicking on "OK & Edit Macro" does not work anymore
Kind regards

Jan

I do not know why, but the second time using Flowcode 8.2 it is working correctly.

Kind regards

Jan

Kind regards

Jan

Hi Ben

You wrote:

you should be able to set the pins by directly editing the SDA and SCL properties

what do you mean with "directly editing"

Kind regrads

Jan

Dear ylanchec

Show us the flowcode and perhaps someone can help you with the software

Kind regards

Jan

It took a while to find a solution. This microchip 16(L)F18857 has (as usually) 2 sets of I2C ports C3 SCLK1, C4 SDAT1, B1 SCLK2 and B2 SDAT2 with low and high levels special for I2C. Other ports (TTL levels) can be used for I2C also. This can be done by means of software setting (settings of specia...

I use the C0 port for SCL and the C1 port for the SDAT of the 16LF18857 microchip. It didn't work, so I made a test Flowcode, see attachment. 1) Before starting the I2C, the C0 and C1 ports are tested with level 1 and 0 each second. The ports work correctly. 2) The second step is to compare the beha...

Hi ylanchec

RW should always be at 0V (or GND). It is better to remove the conenction to P1 of the microchip.

Kind regards

Jan Lichtenbelt

Hi Martin, Correct, if you rember the original macro name, it is easy to find the place were you left the original macro. But my general practice is that I mostly forget the orginal macro name (perhaps I get a little bit old). In that case it would be nice that a simple left-button will bring me bac...

Sorry, I forgot the pull up resistances on the SDAT and SCL of the I2C IC.

I have a lot of macro's. Let say Macro A until Z. Some macro's can be found on top of the screen. Others can be found by (horizontal) scrolling. When I follow a program step by step I reach macro F, sooner or later I met a Macro call to macro U [SAY POINT 1 of the program]. To follow the process can...

I have a flowcode working correctly with an I2C IC. Now I made a new hardware and now flowcode stops in communication with in IC. The first sotware step is to initilise the I2C. The next step in the start the IC. So far so good. The third step is to send the salve address. But here the programm stop...