ad7606 adc data sign correction for bipolar input - Githubissues

analogdevicesinc / no-OS

Software drivers in C for systems without an operating system

http://analogdevicesinc.github.io/no-OS/

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ad7606 adc data sign correction for bipolar input #2324

Closed mi-zeng closed 1 month ago

mi-zeng commented 1 month ago

Pull Request Description

this PR add sign correction feature for bipolar input, serial read based on previous program, read data is stored in uint32_t data type and

for 26 bits version, bit31-bit26 is set to 0, bit25-bit8 is 18bits read data, and bit7-bit0 is status information, this pr sets seperated adc data and status info to 2 different array by input pointered, and set upper bits to 1 for negative bipolar input converted data
for 18 bits version bit32-bit18 are 0, bit17-bit0 are data, upper bits are set to 1 for negative bipolar input converted data

so user can simply change array type to int32_t to get correctted adc data.

PR Type

[ ] Bug fix (change that fixes an issue)
[x ] New feature (change that adds new functionality)
[ ] Breaking change (has dependencies in other repos or will cause CI to fail)

PR Checklist

[x ] I have followed the Coding style guidelines
[x ] I have performed a self-review of the changes
[x ] I have commented my code, at least hard-to-understand parts
[ ] I have build all projects affected by the changes in this PR
[x ] I have tested in hardware affected projects, at the relevant boards
[x ] I have signed off all commits from this PR
[ ] I have updated the documentation (wiki pages, ReadMe etc), if applies