参数资料
型号: 20-101-1094
厂商: Rabbit Semiconductor
文件页数: 86/130页
文件大小: 0K
描述: MCU RCM4000 RABBITCORE
标准包装: 1
系列: RabbitCore®
模块/板类型: MPU 核心模块
适用于相关产品: RCM4000
产品目录页面: 619 (CN2011-ZH PDF)
其它名称: 316-1139
User’s Manual
53
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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