Community Translation: AIROC™ IFW956810 CCM評価キットとMCU開発システムとの接続方法 - KBA236179
Version: **
This KBA describes how to connect a host MCU and the AIROC ™ IFW956810 Cloud Connectivity Manager (CCM) evaluation kit.
Note: The host MCU must have a UART peripheral available for use as the interface to the CCM module.
1 Jumper settings for AIROC ™ IFW956810 CCM evaluation kit
Figure 1 Jumper settings for AIROC ™ IFW956810 CCM evaluation kit
- Red highlight indicates the J60 (8x2) header pins. Remove all jumpers present on the J60 8x2 header pins.
- Yellow highlight indicates the J61 (3x1) header pins. Ensure that the jumper is present between pins 1 and 2. Pin 3 must be empty as shown in Figure 1 (for selecting 3.3 V).
2 Connecting the CCM evaluation kit with the MCU
Figure 2 CCM evaluation kit with MCU
Make the following connections between the MCU and CCM evaluation kit:
- 3.3V -> VDD_33
- UART-TX -> RXD
- UART-RX -> TXD
- GND -> GND
Connecting INT and MSG pins are optional.
Note:
- INT pin is the wakeup pin; the MCU can wake up the CCM evaluation kit in Sleep/Deep Sleep mode by de-asserting the INT pin using the MCU GPIO pin.
- MSG is the event pin; this pin gets asserted whenever there is an event message available in the CCM evaluation kit and gets de-asserted after the MCU reads all the events from the CCM evaluation kit.
The following are the common scenarios where the CCM creates events:
- During CCM reboot
- New message available on the subscribed topic
- New OTA upgrade available
- HOTA upgrade available
- Wi-Fi connection lost
3 Connecting the CCM evaluation kit with the MCU using an Arduino Uno adapter
If your MCU is compatible with Arduino, use the Arduino adapter for connecting the CCM to the MCU. Arduino adapters are available for purchase on www.infineon.com.
Figure 3 PSoC™ 62S2 Wi-Fi Bluetooth® pioneer kit (CY8CKIT-062S2-43012) connected to the CCM evaluation kit with an Arduino Uno adapter
Figure 4 Arduino Uno adapter
Figure 5 Jumper settings for Arduino Uno adapter
- Choose the Jumper settings on J62, J68, J67, and J69 in the Arduino Uno adapter based on your MCU.
- Connect TXD (UART) of the MCU to TXD_UNO.
- Connect RXD (UART) of the MCU to RXD_UNO.
- Connect the INT pin to either D2 or D4.
- Connect MSG_UNO to either D3 or D5.
4 UART configuration between the MCU and CCM
- Baud rate: 115200
- Parity: None
- Data bits: 8 bits
- Stop bits: 1 bit
Note: Verify the connection between the MCU and the CCM by programming your MCU to send AT commands over UART.