nRF51822 UART interfacing and HID over GATT

[ven]

Dear Nordic Team,

I am currently working on a project to develop firmware for S110 nRF51822 softdevice with the following requirements.

• Read ASCII chars from a third party hardware over UART
• Send these chars using HID over GATT from nRF51822 to IPAD or other Bluetooth devices.

I am new to nRF51 SDK and I am struggling with following questions.

1. how do I receive chars from UART

2. how do I sent these chars from UART to HID over GATT.

I have seen the following examples but not sure which one to use.

1. UART/Serial Port Emulation over BLE

or

2. HID Keyboard Application

are there any other examples available.

Please guide me in understating how to solve this.

Kind regards,

Ven

[Hung Bui]

@Ven: It's depend on what you want your device to be interfaced with the phone/tablet. If you want them to function as keyboards then you have to use HID. If you simply want to transfer UART data, you don't have to use HID profile.

Regarding programming the module, you would need to find the pinout description of the module, then find the 4 pins: VDD, GND, SWDIO, SWDCLK to connect to your programmer.

I would suggest you to also find the support from the module maker on how to program the module.