"Bottom" IO expander pinout
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Hello everybody !
I've ordered M5Stack Basic kit and I'm preparing my project.
I'm not able to find any schematic / picture that describes the link between MBus to IO of the Bottom module
Following Schematic:
MBus have 30 pins with 20 GPIO
Following Bottom module picture:
Bottom module come with 46 pins with 30 IO...
I can figure out connection for 5V, 3V3, GND, RST, BAT but for the other ???
2 pins are named "DA". What does it mean ?
"R0"/"T0": RX/TX from UART 1 ?
"R2"/"T2": RX/TX from UART 2 ?
"2" means GPIO2 ? So what "G2" means ?Anyone can help ? Do you have a document regarding that ?
Many thanks for your help,
Max -
Names on the right side correspond to the GPIO numbers on the left and are connected together.
higher DA mean GPIO25
lower DA mean GPIO26R0/T0 = GPIO3/GPIO1 -> uart0
R2/T2 = GPIO16/GPIO17 -> uart2Similarly, bottom names applies to the gpio numbers at the top.
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Thanks you so much for your reply !
So, right now I'm understanding that I will have half IO than expected...Thanks again, It helps me a lot
See you