# pic18f47q10-cnano-spi-master-send-bare

**Repository Path**: microchip-pic-avr-examples/pic18f47q10-cnano-spi-master-send-bare

## Basic Information

- **Project Name**: pic18f47q10-cnano-spi-master-send-bare
- **Description**: The PIC18F47Q10 features two MSSP modules, which can be configured in SPI mode. In this demo, the SPI is configured as master and sends data to two slave devices, one at a time. The repository contains the bare metal code for the application.
- **Primary Language**: C
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-06-17
- **Last Updated**: 2020-12-19

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

<div id="readme" class="Box-body readme blob js-code-block-container">
 <article class="markdown-body entry-content p-3 p-md-6" itemprop="This needs to locked down and 'never' changed"><p><a href="https://www.microchip.com" rel="nofollow"><img src="Images/Microchip.png" alt="MCHP" width="300";"></a></p>

# PIC18F47Q10 Sending Data as a Master SPI Device with Multiple Slaves

## Objective
This repository contains an example of bare-metal source code for SPI as described in [*TBxxxx - Getting Started with SPI using MSSP on PIC18*](https://www.microchip.com/) document from Microchip.
<br>In this demo, the SPI will be configured as master and it will be used to send data to two slave devices, one at a time.

## Related Documentation
- [TBxxxx - Getting Started with SPI using MSSP on PIC18](http://www.microchip.com/)
- [PIC18-Q10 Product Family Page](https://www.microchip.com/design-centers/8-bit/pic-mcus/device-selection/pic18f-q10-product-family)
- [PIC18F47Q10 Data Sheet](http://ww1.microchip.com/downloads/en/DeviceDoc/40002043D.pdf)
- [PIC18F47Q10 Code Examples on GitHub](https://github.com/microchip-pic-avr-examples?q=pic18f47q10-cnano&type=&language=)

## Software Used
- MPLAB® X IDE 5.30 or newer [(microchip.com/mplab/mplab-x-ide)](http://www.microchip.com/mplab/mplab-x-ide)
- MPLAB® XC8 2.10 or a newer compiler [(microchip.com/mplab/compilers)](http://www.microchip.com/mplab/compilers)
- Microchip PIC18F-Q Series Device Support 1.3.89 or newer [(packs.download.microchip.com/)](https://packs.download.microchip.com/)

## Hardware Used
- PIC18F47Q10 Curiosity Nano [(DM182029)](https://www.microchip.com/Developmenttools/ProductDetails/DM182029)

## Setup
The PIC18F47Q10 Curiosity Nano Development Board is used as the test platform.

<br><img src="Images/PIC18F47Q10_CNANO.png" width="600">

The following configurations must be made for this project:
- Clock
  - Oscillator Select: HFINTOSC
  - HF Internal Clock: 64 MHz
  - Clock Divider: 1
- MSSP1:
  - MSSP1 Enabled
  - Serial Protocol: SPI
  - Mode: Master
  - Data Mode: 0
  - Input Data Sampled At: Middle
  - Clock Source Selection: FOSC/4_SSPxADD
  - SPI Clock Frequency: 8 MHz

- Watchdog Timer: disabled
- Low-voltage Programming: enabled

|Pin           | Configuration      |
| :----------: | :----------------: |
|RC3 (SCK)     | Digital Output     |
|RC4 (SDI)     | Digital Input      |
|RC5 (SDO)     | Digital Output     |
|RC6 (SS1)     | Digital Output     |
|RC7 (SS2)     | Digital Output     |

## Operation
1. Connect the board to the PC.

2. Open the *pic18f47q10-cnano-spi-master-send-bare.X* project in MPLAB® X IDE.

3. Set *pic18f47q10-cnano-spi-master-send-bare.X* project as main project. Right click on the project in the *Projects* tab and click *Set as Main Project*.

4. Select the *PIC18F47Q10 Curiosity Nano* in the *Hardware Tool* section of the project settings:
  - Right click on the project and click *Properties*;
  - Select the *PIC18F47Q10 Curiosity Nano* (click on the SN) in the *Hardware Tool* tab and then click *OK*:
<br><img src="Images/SPI-master-send-bare-tool.PNG" width="600">


5. Program the project to the board: right click on the project and click *Make and Program Device*.

Result:
- Channel 0 -> SCK
- Channel 1 -> SDI
- Channel 2 -> SDO
- Channel 3 -> SS1
- Channel 4 -> SS2
<br><img src="Images/master-send-bare.png" width="600">

## Summary
This project is an illustration for a basic use case based around MSSP1 in SPI mode.