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Results tagged with device-driver
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user 90904
A device driver is a specialized software component (usually considered "system software") which allows a system to interact with a particular type or class of hardware device, such as a keyboard, serial port, disk drive, video display, memory controller, or other peripheral.
7
votes
3
answers
182
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Microgrid device driver controlling GSM modem, LCD, keypad, and relays
I have an MCU (TI Tiva TM4C) that operates a GSM modem, LCD display, keypad, ADC inputs, and four relays for microgrid control/operation.
To date I have about 2000 lines of code, mostly for supporti …
- 419
5
votes
1
answer
623
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Processing text messages from a GSM module
I have a Tiva TM4C ARM processor connected to a GSM modem (SIM900). When the GSM modem receives a new text message it sends a UART string to the MCU, where an interrupt routine increments a new messag …
- 419
3
votes
5
answers
164
views
Toggle four relays on/off based on bitmap stored in uint8_t
I am using a one-byte bitmap to control four relays. I am writing a function which will take the bitmap stored as uint8_t, look to see which bits are set/cleared, then turn on/off the relays appropria …
- 419
0
votes
Toggle four relays on/off based on bitmap stored in uint8_t
Figured this made more sense as a new answer. I made some changes to the code and included the relayOn(),relayOff(), and relayLatch() functions.
The main changes are using the for loop as many of you …
- 419