- Name:
-
serout
- Syntax:
-
SEROUT pin,baudmode,({#}data,{#}data...)
Pin - is a variable/constant which specifies the i/o pin to use.
Baudmode - is a variable/constant (0-7) which specifies the mode:
Txxx give a true output (idle high).
Nxxx give an inverted output (idle low.
For 08 / 08M / 18 / 18A / 28 / 28A parts
| 4MHz |
8MHz |
16MHz |
| T300_4 |
T600_8 |
T1200_16 |
| T600_4 |
T1200_8 |
T2400_16 |
| T1200_4 |
T2400_8 |
T4800_16 |
| T2400_4 |
T4800_8 |
T9600_16 |
| N300_4 |
N600_8 |
N1200_16 |
| N600_4 |
N1200_8 |
N2400_16 |
| N1200_4 |
N2400_8 |
N4800_16 |
| N2400_4 |
N4800_8 |
N9600_16 |
For all other parts (e.g. all X1, X2, M2 parts)
| 4MHz |
8MHz |
16MHz |
32MHz |
64MHz |
| T600_4 |
T1200_4 |
T2400_16 |
T4800_32 |
T9600_64 |
| T1200_4 |
T2400_8 |
T4800_16 |
T9600_32 |
T19200_64 |
| T2400_4 |
T4800_8 |
T9600_16 |
T19200_32 |
T38400_64 |
| T4800_4 |
T9600_8 |
T19200_16 |
T38400_32 |
T76800_64 |
| N600_4 |
N1200_8 |
N2400_16 |
N4800_32 |
N9600_64 |
| N1200_4 |
N2400_8 |
N4800_16 |
N9600_32 |
N19200_64 |
| N2400_4 |
N4800_8 |
N9600_16 |
N19200_32 |
N38400_64 |
| N4800_4 |
N9600_8 |
N19200_16 |
N38400_32 |
N76800_64 |
Data - are variables/constants (0-255) which provide the data to be output. Optional #'s are for outputting ASCII decimal numbers, rather than raw characters. Text can be enclosed in speech marks ("Hello")
- Description:
-
Transmit serial data output (8 data bits, no parity, 1 stop bit).
The serout command is used to transmit serial data from an output pin of the microcontroller.
To send data via the serial out download output pin the sertxd command is recommended. On some PICAXE the serout command cannot be used to send data via the serial out download output pin and the sertxd command must be used.
Pin specifies the output pin to be used. Baud mode specifies the baud rate and polarity of the signal. When receiving RS232 level data using a simple resistor interface, use N (inverted) signals. When using a MAX232 type interface use T (true) signals. The protocol is fixed at N,8,1 (no parity, 8 data bits, 1 stop bit).
A 'N' baud rate idles low, with data pulse going high.
A 'T' baud rate idles high, with data pulses going low.
When using a T baud rate the very first byte may become corrupt if the output pin was low before the serout command (the pin will be automatically left high after the serout command). To avoid this issue place the line high (via a high command') a few milliseconds before the very first serout command.
The # symbol allows ASCII output. Therefore #b1, when b1 contains the data 126, will output the ascii characters "1" "2" "6" rather than the raw data 126. The # symbol can also be used with word, bit and input pin variables.
Please also see the affect of resonator clock speed, and explanation notes of the 'serin' command, as all of these notes also apply to the serout command.