Pepper-computer Modular Computers RS485 Manual do Utilizador descarregar pdf (Página 209)

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101

SMART I/O User’s Manual

Chapter 5 Analog Modules

5.2.8.16 SMADCReadRaw

Syntax

error_code SMADCReadRaw(u_int8 PortNr, u_int8 channel,

u_int16 *pBuffer);

Description

This function checks if an SM-PT100 board is fitted on the specified port and

if the channel is valid. It reads the raw value of the last conversion and stores

it in a user defined buffer. The user has to take care that the buffer is large

enough to store the data.

Input

u_int8 PortNr

Port number from which raw data is to be read

(from 0 to 10)

u_int8 channel

Number of the channel to be read (0 to 3)

u_int16 *pBuffer

Pointer to a user defined buffer

Output

error_code SUCCESS

E_MNF

If wrong type of module or no module

is fitted on the selected port

E_PARAM

If wrong channel number is specified

E_NOTRDY

If no data is available at the moment

- wait or poll the input

or standard OS-9 error code (refer to the OS-9

Technical Manual Error Codes Section).

Example

RetVal = SMADCReadRaw(0, 1, &Buffer);

1 2 ... 204 205 206 207 208 209 210 211 212 213 214 ... 319 320

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