I need to connect wizfi250 to an MCU. Please give me some help!
In other posts and datasheets you mention about GPIO pin 14 that you use it to see if wifzi has data to send. Yes, but what would be the status of the pin when data is ready? Low or high?
What is the maximum and what the minimum MASTER MCU clock speed that wizfi250 cav handle?
By saying that there is an SPI_Data Ready Pin, then there must be a register on Wizfi250 that stores that byte.
Is that register accessible?
How many bytes can it store?
How long is the data stored?
Regarding the setting of SPI.
When I connect the USB cable in order to set communcation as SPI , I send the command AT+MSPI=? and I get AT+MSPI=1,0, which means UART interface.
Then I send AT+MSPI=2,0 in order to set interface as SPI and I get response "ok"
Then I send again AT+MSPI=? and I get response AT+MSPI=1,0, which means UART >> my question is how do I set up as SPI interface and keep it that way without being revert back to UART?
What is the minumum/ maximum voltage for SPI pins?
When I connect the SPI pins to the MCU and then I disconnect the Ground of the Wizfi supply BUT leave the 5V then the LED1 is ON! Does this mean that back current comes from the SPI pins? Is this harmfull? Should I place diodes on the SPI connections?
I would appreciate your answer,