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sraiderk
Joined: 09 Feb 2005
Posts: 48
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| 18F24K40 & handle of rs232_errors |
 Posted: Thu Feb 22, 2018 3:00 am |
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I have used the 18F24K40 with compiler version 5.076. My code is very simple:
| Code: |
#include <18F24K40.h>
#FUSES NOWDT //No Watch Dog Timer
#use delay(clock=64MHz,crystal=16MHz)
#use rs232(baud=9600,parity=E,xmit=PIN_C6,rcv=PIN_C7,bits=8,stream=PORT1,enable=PIN_C5,errors)
#bit x=rs232_errors.0
void main()
{
while(TRUE)
{
//TODO: User Code
}
}
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Compiler give error message "undefined identifier" for rs232_errors.
But, if I change the microcontroller with same code (#include <18F24K20.h> instead of #include <18F24K40.h>), there is no error message from compiler.
What's the wrong?
So, I want to use Hardware Uart with 18f24k40 with control the parity error.
How can I do with this MCU? |
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sraiderk
Joined: 09 Feb 2005
Posts: 48
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| Re: 18F24K40 & handle of rs232_errors |
| Posted: Thu Feb 22, 2018 5:17 am |
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| sraiderk wrote: | I have used the 18F24K40 with compiler version 5.076. My code is very simple:
#include <18F24K40.h>
#FUSES NOWDT //No Watch Dog Timer
#use delay(clock=64MHz,crystal=16MHz)
#use rs232(baud=9600,parity=E,xmit=PIN_C6,rcv=PIN_C7,bits=8,stream=PORT1,enable=PIN_C5,errors)
#bit x=rs232_errors.0
void main()
{
while(TRUE)
{
//TODO: User Code
}
}
compiler give error message "undefined identifier" for rs232_errors.
But, if I change the microcontroller with same code (#include <18F24K20.h> instead of #include <18F24K40.h>), there is no error message from compiler.
What's the wrong?
So, I want to use Hardware Uart with 18f24k40 with control the parity error.
How can I do with this MCU? |
The other solution using the RC1STA register. Bi 0 that has a parity bit, isn't it? From there, I will write parity control algorithm with comparing to RC1STA.0 and parity control algorithm. |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19546
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| Posted: Thu Feb 22, 2018 9:09 am |
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Why not just use 9bit mode?.
You can tell the #USE to give you long data (16bit values to/from the UART), and then the parity bit is the 9th bit. Much easier. |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19546
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| Posted: Thu Feb 22, 2018 9:30 am |
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I realise the reason your code is not working. You are not using the UART....
On the K40, the UART is a PPS peripheral (means it can be moved to other pins). Look at the 'sticky' at the top of the forum for how to use #PIN_SELECT.
On a PPS peripheral, there is no 'default' operation. You _must_ select the peripheral.
| Code: |
#PIN_SELECT U1TX=PIN_C6
#PIN_SELECT U1RX=PIN_C7
#use rs232(baud=9600,parity=E,UART1,bits=8,stream=PORT1,enable=PIN_C5,errors)
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sraiderk
Joined: 09 Feb 2005
Posts: 48
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| Posted: Fri Feb 23, 2018 12:52 am |
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| It's OK now. Ttelmah, thank you for your help... |
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