參數(shù)資料
型號(hào): 20-101-1105
廠商: Rabbit Semiconductor
文件頁(yè)數(shù): 64/112頁(yè)
文件大?。?/td> 0K
描述: MODULE RCM4100 RABBITCORE
標(biāo)準(zhǔn)包裝: 1
系列: RabbitCore®
模塊/板類型: MPU 核心模塊
適用于相關(guān)產(chǎn)品: RCM4100
其它名稱: 316-1121
User’s Manual
51
anaInDriver
int anaInDriver(unsigned int cmd);
DESCRIPTION
Reads the voltage of an analog input channel by serial-clocking an 8-bit command to
the A/D converter by its Direct Mode method. This function assumes that Mode1 (most
significant byte first) and the A/D converter oscillator have been enabled. See anaIn-
Config()
for the setup.
The conversion begins immediately after the last data bit has been transferred. An ex-
ception error will occur if Direct Mode bit D7 is not set.
PARAMETERS
cmd
contains a gain code and a channel code as follows.
D7—1; D6–D4—Gain Code; D3–D0—Channel Code
Use the following calculation and the tables below to determine cmd
:
cmd = 0x80 | (gain_code*16) + channel_code
Gain Code
Gain
Multiplier
0×1
1×2
2×4
3×5
4×8
5×10
6×16
7×20
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