Hi Filipe,
In the bluetooth_hc_05.jal library I made a function that reads a string
including OK but returns only the string (without the OK). The code is as
follows:
-- Wait for data from the module and copy all data to the bluetooth receive
-- buffer until 'OK' is found. If 'OK' is found the function returns TRUE.
-- The number of bytes in the receive buffer is stored in the global variable
-- bluetooth_hc05_bytes_received and the read pointer is reset.
-- Note that 'OK' is not stored in bluetooth_hc05_bytes_received but the
-- carriage return and line feed are.
function _bluetooth_hc05_wait_and_get_data_ok() return bit is
var dword timeout = 0
var byte index = 0
var byte character
var bit found_o = FALSE
var bit found_ok = FALSE
bluetooth_hc05_bytes_received = 0
_bluetooth_hc05_read_pointer = 0
while (index < BLUETOOTH_HC05_RECEIVE_BUFFER_SIZE) & !found_ok &
(timeout < _bluetooth_hc05_wait_time) loop
if _bluetooth_hc05_serial_read(character) then
bluetooth_hc05_receive_buffer[index] = character
index = index + 1
timeout = 0
if (character == "O") then
found_o = TRUE
elsif (character == "K") & found_o then
found_ok = TRUE
-- Bytes received is everything except for 'OK'.
bluetooth_hc05_bytes_received = index - 2
else
-- It was not 'OK', reset.
found_o = FALSE
found_ok = FALSE
end if
end if
timeout = timeout + 1
_usec_delay(100)
end loop
return found_ok
end function
Kind regards,
Rob
________________________________
Van: [email protected] <[email protected]> namens flyway38
<[email protected]>
Verzonden: zaterdag 3 december 2022 15:11
Aan: jallib <[email protected]>
Onderwerp: Re: [jallib] Re: Variable Table Append
Hi Rob,
Thank you for that info.
The OK answer from the modem, am already getting, but using "like brute force"
serial readings...
function CheckComms_OK() return bit is
timer = 0
Received[0] = "X"
Received[1] = "X"
--
while (Received[0]!="O" | Received[1]!="K") & timer < 60_000 loop
fReturn = serial_hw_read(char)
Received[0] = char
fReturn = serial_hw_read(char)
Received[1] = char
--
timer = timer + 1
end loop
--
fReturn = FALSE
--
if (Received[0]=="O" & Received[1]=="K") then
return TRUE
else
return FALSE
end if
end function
But other answers from the modem are still a no go.
Example: "+CMGS" from an AT+CMGS="phone nr"....
Will need this because will need to also receive SMS with this PIC.
Will check that LIB you mentioned.
Thank you.
Cheers,
FS
On Saturday, December 3, 2022 at 1:43:23 PM UTC [email protected] wrote:
Hi Filipe, Vasile,
I would recommend using the serial libraries that work on an interrupt basis
like serial_hw_int_cts.jal. Using this library with a big enough buffer will
prevent that you miss any characters.
I used this - using AT commands - in the libraries bluetooth_hc05.jal and
bluetooth_hc06.jal as to be able to check if an OK was received after an AT
command.
Kind regards,
Rob
________________________________
Van: [email protected] <[email protected]> namens vsurducan
<[email protected]>
Verzonden: zaterdag 3 december 2022 11:09
Aan: [email protected] <[email protected]>
Onderwerp: Re: [jallib] Re: Variable Table Append
Oh, understood. Reading needs to have priority. Use interrupts then...or avoid
using any delays in your actual code.
A sms has not an instant execution ( most of the time). So using low speed
transmission/reception it might be a working solution.
On Sat, Dec 3, 2022 at 11:53 AM flyway38 <[email protected]> wrote:
Hello Vasile,
Am not using serial lib with interrupts.
Maybe I need to use that lib.
Current problem is GSM modem seems to acknowledge (ex: "OK") faster than my
code can read it...
A simple "AT" seems to get the "OK" faster than I can read.
And I want to get all acknowledges... to not step to next AT command before
having sure of "OK" response from the modem.
All my AT commands to send an SMS are working ok, if no checking for the
acknowledges...
Big battle here under going. :D
Thank you for your input.
Cheers,
FS
On Saturday, December 3, 2022 at 6:18:47 AM UTC vasile wrote:
Fellipe, I'm curious if this will work fo you. I was never able to use the
serial library (interrupts) as is without a slip of one char in received
characters order. I've counted chars to solvethe problem....
Depending on your GSM transciever, some delays may be needed between chars and
some longer delays between AT commands and chars.
On Fri 2 Dec 2022, 9:25 PM flyway38 <[email protected] wrote:
Hello Rob,
Thank you very much.
This will help alot.
Cheers.
FS
On Friday, December 2, 2022 at 7:21:46 PM UTC [email protected] wrote:
Hi Filipe,
One correction. if you get a timeout then there is no string (or only a partial
string) so you have to check if the timer has reached the timeout after the
repeat.
Kind regards,
Rob
________________________________
Van: [email protected] <[email protected]> namens Rob CJ
<[email protected]>
Verzonden: vrijdag 2 december 2022 20:20
Aan: [email protected] <[email protected]>
Onderwerp: Re: [jallib] Re: Variable Table Append
Hi Filipe,
Some sample code. I did not test it (or compiled it) but I assume you get the
idea.
const word MAX_TIMEOUT = 20_000
const byte MAX_BUFFER = 20
const byte CR = 0x0D
const byte LF = 0x0A
var word timer = 0
var byte my_buffer[MAX_BUFFER]
var byte index = 0
var byte character = 0
-- Read a string.
repeat
if serial_hw_data_available() then
character = serial_hw_data
my_buffer[index] = character
index = index + 1
end if
timer = timer + 1
_usec_delay(100)
until (index == MAX_BUFFER) | (character == CR) | (character == LF) | (timer ==
MAX_TIMEOUT)
The string is then in my_buffer (including a CR or LF).
Kind regards,
Rob
________________________________
Van: [email protected] <[email protected]> namens flyway38
<[email protected]>
Verzonden: vrijdag 2 december 2022 19:23
Aan: jallib <[email protected]>
Onderwerp: Re: [jallib] Re: Variable Table Append
Hi Rob,
Thanks for your input.
Could you post some sample code please?
I think am missing some important details...
How can I define a variable buffer?
Because this seems not work: var byte received[]=""...
Am also struggling to read my modems relies to AT commands...
It seems my code is working correctly and after sending the AT command, the
readings from serial port seems to point to characters from the sent command...
Getting crazy here while in battle with the code... :D
Thank you very much.
Best regards,
Filipe Santos
On Friday, December 2, 2022 at 6:06:56 PM UTC [email protected] wrote:
Hi Filipe,
You just read the data from a serial port, add that to your local variable
buffer, increment an index pointer with each received character and read until
you receive either a Carriage Return or a Line Feed (one of the will do). I
normally also add a timeout to the read function so that it does not hang when
nothing is received.
Kind regards,
rob
________________________________
Van: [email protected] <[email protected]> namens flyway38
<[email protected]>
Verzonden: vrijdag 2 december 2022 12:38
Aan: jallib <[email protected]>
Onderwerp: [jallib] Re: Variable Table Append
Am trying to mimic a "Read_String" from serial port.
Any ideas?
Thank you.
Regards,
FS
On Friday, December 2, 2022 at 9:42:34 AM UTC flyway38 wrote:
Hello all,
Have searched for it but haven't found anything useful.
Need to know a good way of appending a variable table.
Starting from a MyVar[] = "", then just append data to it...
Also what happen to website: https://justanotherlanguage.org/ ?
Cannot connect to that website.
Thank you very much.
Kind regards,
Filipe Santos.
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