We are planning to stream data of three cameras in real time, as it requires high data rate we had connected microcontroller to WF121 wifi module through ethernet. We need to transmit that data wirelessley to a PC nearby using wifi module's AP mode.
So is it feasible?
Can WF121 wifi module's Access Point [AP] mode has enough bandwidth to transmit the data?
Wi-Fi
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Hi,
> as it requires high data rate we had connected microcontroller to WF121 wifi module through ethernet
Can you tell us why you would prefer to connect uC and module over ethernet instead of UART?
The user datarates over Wi-Fi for all existing connections combined cannot exceed the 3.5Mbps in a WF121, and the module's UART baudrate can go high enough to cope with this.
1
Hey,
Thanks for the reply
The uC we are using is MPC5604E, it is a automotive chip which does'nt contains UART.
Both uC and WF121 Wifi module are on the same PCB, it is a transformerless ethernet connection between uC and WF121 Wifi module. Please refer the attached block diagram.
>The user datarates over Wi-Fi for all existing connections combined cannot exceed the 3.5Mbps in a WF121
As for the bandwidth to transmit the data, this is up to 3.5Mbps over the air. What I meant is that you might have one or multiple TCP/UDP connections (established/accepted by the module, or across it when using ethernet bridging) and for all of them the combined max user datarates are in the order of 3.5Mbps
As for the feasibility, this is possible provided that the TCP/IP stack is run in the uC: in fact, when in bridging mode the module's TCP/IP stack will be disabled, while there is no BGAPI protocol available over the Ethernet interface to control the module like you would do over the UART.
WF121-Ethernet to Wifi
Hi,
We are planning to stream data of three cameras in real time, as it requires high data rate we had connected microcontroller to WF121 wifi module through ethernet. We need to transmit that data wirelessley to a PC nearby using wifi module's AP mode.
So is it feasible?
Can WF121 wifi module's Access Point [AP] mode has enough bandwidth to transmit the data?
Hi,
> as it requires high data rate we had connected microcontroller to WF121 wifi module through ethernet
Can you tell us why you would prefer to connect uC and module over ethernet instead of UART?
The user datarates over Wi-Fi for all existing connections combined cannot exceed the 3.5Mbps in a WF121, and the module's UART baudrate can go high enough to cope with this.
Hey,
Thanks for the reply
The uC we are using is MPC5604E, it is a automotive chip which does'nt contains UART.
Both uC and WF121 Wifi module are on the same PCB, it is a transformerless ethernet connection between uC and WF121 Wifi module. Please refer the attached block diagram.
>The user datarates over Wi-Fi for all existing connections combined cannot exceed the 3.5Mbps in a WF121
I didnt get the the above statement.
Hi,
Thanks for the block diagram.
As for the bandwidth to transmit the data, this is up to 3.5Mbps over the air.
What I meant is that you might have one or multiple TCP/UDP connections (established/accepted by the module, or across it when using ethernet bridging) and for all of them the combined max user datarates are in the order of 3.5Mbps
As for the feasibility, this is possible provided that the TCP/IP stack is run in the uC: in fact, when in bridging mode the module's TCP/IP stack will be disabled, while there is no BGAPI protocol available over the Ethernet interface to control the module like you would do over the UART.