CR95HF UART Speed Change
I'm Using the CR95HH under a linux Microcontroler.
in this case, I'm using the UART port to communicate (not SPI), the default BaudRate is 57600, and works fine, but when I try to change the Baud rate to maximum Speed (Datasheet mention 2 Mbps max), I can't find the right procedure to do that.
the page 38 of
Data
sheet
have the description of command 0x0A, according with this, we need to use a formula to calculate the BaudRate ==> '13.56 /(2*<BaudRate>+2) Mbps', where 'BaudRate' is any number from 0 ~ 255.If I apply this formula, no one number give me the exact Baudrate than Linux support. in any case, I use the most closer to linux Standard. but the only one than works is the Default (B57600)
By the Way, I'm using 'C' under linux
my Actual procedure is:
1.- Open Uart port at 57600
2.- Send WakeUp command to Device
3.- send new Baudrate command (0x0A 0x01 0x05) ==> 0x05 for 1.13 Mbps (Linux more closer B1152000)
4.- Close Uart Port
5.- Open UART at 1152000
6.- Start Using...
I try many different speeds but the only one than works is the default.
any Idea?
the Linux UART BAUD supported are (from termios.h):
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#define B57600 0010001
#define B115200 0010002#define B230400 0010003#define B460800 0010004#define B500000 0010005#define B576000 0010006#define B921600 0010007#define B1000000 0010010#define B1152000 0010011#define B1500000 0010012#define B2000000 0010013#define B2500000 0010014#define B3000000 0010015#define B3500000 0010016#define B4000000 0010017=======================