参数资料
型号: DM300004-2
厂商: Microchip Technology
文件页数: 83/114页
文件大小: 0K
描述: BOARD DEMO DSPICDEM.NET 2
标准包装: 1
系列: dsPIC™
类型: 微控制器
适用于相关产品: CTR-21 PSTN,以太网 NIC
所含物品: 板,线缆,CD,电源
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V.22bis Soft Modem Demonstration
6.7
dsPIC30F SOFT MODEM AT COMMAND SET
The AT commands listed in Table have been selected to serve embedded soft modem
applications on the dsPIC30F product family. These commands are a subset of the
overall AT command set. Although the command set includes support for up to V.32bis,
only V.22bis is supported in this demonstration.
TABLE 6-2:
Command
En
Hn
Ln
In
Qn
Vn
A
Dnnn..
T
On
? 2004 Microchip Technology Inc.
AT COMMAND SET FOR dsPIC30F SOFT MODEM
Description
Command Echo
E0 – Inhibits the echoing of commands to the computer
E1 – Echoes commands to the computer
Hang Up And Hook Control
H – Modem hangs up and go on-hook.
H0 – Causes the modem to go on-hook
H1 – Causes the modem to go off-hook
Control Speaker Volume
L0 – Speaker Turn off
L1 – Low
L2 – Medium (Default)
L3 – High
Information and Identification
This command has various options which are used to instruct the modem to
provide specific information about itself
I0 – Displays the modem controller firmware revision
I3 – Same as I0
I4 – Current modem settings
I6 – Link diagnostics
Quiet Mode
Determines whether the modem sends result codes and status codes
(OK, BUSY, RING, etc.) to the terminal.
Q0 – Display result codes, user sees command responses (e.g., OK)
Q1 – Result codes are suppressed, user does not see responses
Result Code Form
Selects whether the modem sends long form (in words) or short form
(numeric) result codes the terminal.
V0 – Numeric result codes
V1 – English result codes (e.g., CONNECT, BUSY etc.)
Answer
Modem goes off hook, transmits answer tone and waits for a carrier
response from the remote modem.
Dial
Dials a telephone number and attempts to connect. The dial command must
be the last command on the line.
To cancel the Dial command, press any key.
To dial 5588257, type ATD5588257
Local Loop Back
Modem Starts Local loop back
Enter Connect State and Retrain
O0 – Leave online command mode and return to online data mode.
O1 – Issues the retrain command
DS51471A-page 79
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