Jim Conner
Load cell amplifier interface
hx711.h@0:d47fb3d4b918, 2015-03-31 (annotated)
- Committer:
- jimconner
- Date:
- Tue Mar 31 17:42:18 2015 +0000
- Revision:
- 0:d47fb3d4b918
Mostly workingish code... the numbers change appropriately when I put weight on the load cell.
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| jimconner | 0:d47fb3d4b918 | 1 | /* mbed library for HX711 Load Cell Amplifier/24-bit A/D converter |
| jimconner | 0:d47fb3d4b918 | 2 | * Copyright (c) 2015 Jim Conner |
| jimconner | 0:d47fb3d4b918 | 3 | * |
| jimconner | 0:d47fb3d4b918 | 4 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| jimconner | 0:d47fb3d4b918 | 5 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| jimconner | 0:d47fb3d4b918 | 6 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| jimconner | 0:d47fb3d4b918 | 7 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| jimconner | 0:d47fb3d4b918 | 8 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| jimconner | 0:d47fb3d4b918 | 9 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| jimconner | 0:d47fb3d4b918 | 10 | * THE SOFTWARE. |
| jimconner | 0:d47fb3d4b918 | 11 | */ |
| jimconner | 0:d47fb3d4b918 | 12 | |
| jimconner | 0:d47fb3d4b918 | 13 | /** Some stuff to make the load cell work. |
| jimconner | 0:d47fb3d4b918 | 14 | */ |
| jimconner | 0:d47fb3d4b918 | 15 | |
| jimconner | 0:d47fb3d4b918 | 16 | #include "mbed.h" |
| jimconner | 0:d47fb3d4b918 | 17 | |
| jimconner | 0:d47fb3d4b918 | 18 | #ifndef HX711_H |
| jimconner | 0:d47fb3d4b918 | 19 | #define HX711_H |
| jimconner | 0:d47fb3d4b918 | 20 | |
| jimconner | 0:d47fb3d4b918 | 21 | /* some definitiions go in here */ |
| jimconner | 0:d47fb3d4b918 | 22 | //#define Black 0x0000 /* 0, 0, 0 */ |
| jimconner | 0:d47fb3d4b918 | 23 | |
| jimconner | 0:d47fb3d4b918 | 24 | // Load Cell control class |
| jimconner | 0:d47fb3d4b918 | 25 | class HX711 |
| jimconner | 0:d47fb3d4b918 | 26 | { |
| jimconner | 0:d47fb3d4b918 | 27 | public: |
| jimconner | 0:d47fb3d4b918 | 28 | |
| jimconner | 0:d47fb3d4b918 | 29 | /** Create an HX711 object connected to Clock and Data pins |
| jimconner | 0:d47fb3d4b918 | 30 | * |
| jimconner | 0:d47fb3d4b918 | 31 | * @param clk pin connected to clock line of HX711 board |
| jimconner | 0:d47fb3d4b918 | 32 | * @param addo pin connected to data line of HX711 board |
| jimconner | 0:d47fb3d4b918 | 33 | */ |
| jimconner | 0:d47fb3d4b918 | 34 | HX711(PinName clk, PinName addo); |
| jimconner | 0:d47fb3d4b918 | 35 | ~HX711(); |
| jimconner | 0:d47fb3d4b918 | 36 | |
| jimconner | 0:d47fb3d4b918 | 37 | /** Read data from the HX711 interface |
| jimconner | 0:d47fb3d4b918 | 38 | * @return reading from ADC as an int. |
| jimconner | 0:d47fb3d4b918 | 39 | */ |
| jimconner | 0:d47fb3d4b918 | 40 | long readData(void); |
| jimconner | 0:d47fb3d4b918 | 41 | |
| jimconner | 0:d47fb3d4b918 | 42 | private: |
| jimconner | 0:d47fb3d4b918 | 43 | DigitalOut clk; |
| jimconner | 0:d47fb3d4b918 | 44 | DigitalIn addo; |
| jimconner | 0:d47fb3d4b918 | 45 | |
| jimconner | 0:d47fb3d4b918 | 46 | }; |
| jimconner | 0:d47fb3d4b918 | 47 | |
| jimconner | 0:d47fb3d4b918 | 48 | #endif |