Ask questions and find answers on connectivity ICs, focusing on protocols and I2C challenges on STM32 Nucleo boards and BlueNRG products.
I have run into problems trying to get voice data from the MP34DT05-A PDM Microphone on the BlueNRGLP eval board. Specifically, and after spending a fair chunk of time (using the BLE_Sensor_Demo_BlueMSApp demo code as a starting point), it appears th...
Hello,I'm using a BlueNRG-2 via SPI from a main uC host. The BLE stays advertising and the main uC goes to Standby mode. When someone tries to connect to my device, main uC wakes up. Since I don't want to restart the BLE (this would reset our addres...
I'm hoping to use the STUSB4700 in a product design. The product needs to be supplied by normally by a tablet (only 5V @ 100mA required). Sometimes the product will have external power available and when it does, I want to source power to the table...
The Lis2du12 chip is malfunctioning, and the ODR of the CTRL5 register can only be written to 0x4 and 0x8. When writing to 0xa and then reading, it is 0x8, and the register status is always 0x02, and the power down bit is always 1, indicating no oper...
Hello,I am using BlueNRG-M0A and have a successful implementation working. However, I have a scenario that I'm unsure how to properly program.If I am currently paired to a Bluetooth device (i.e. a phone). The Bluetooth app crashes or the phone goes o...
Hello everyone,I'm trying to write a driver for the ILI9341 display (8 bit parallel mode, not SPI) using the ST HAL. I couldn't get the libraries I found online working, I imagine for the same reason I can't get mine to work. Obviously I have double ...
Hi,I am doing simulations for Electrical Characteristics and find the the IDSS and IGSS are in the range of nA instead of uA as quoted in the datasheet. Can any ST Engineer help me if the numbers need updates? I filed a support ticket, instead was in...
According to the characteristic/features section in this BlueSTSDK documentation page, characteristic data has a 2-byte timestamp. What are the units of this timestamp? In other words, what does each tick in the timestamp represent? The timestamp goe...
Hello,i defined a characteristic with notify propriety : ret = aci_gatt_add_char(Service2_Handle1,UUID_TYPE_128,&char_uuid,26,CHAR_PROP_NOTIFY | CHAR_PROP_WRITE | CHAR_PROP_WRITE_WITHOUT_RESP,ATTR_PERMISSION_NONE,GATT_NOTIFY_ATTRIBUTE_WRITE | GATT_N...
It looks like BlueNRG-MS doesn't remember that BLE client asked it to change CCCD from 0 (default value) to 1 (subscribe to value change notifications) upon BLE server reboot. And I need to restore CCCD to 1 because BLE client doesn't do it on reconn...