Hello,
I'm evaluating TI Bluetooth (Bluetopia) using TM4C123GXL and CC256xQFNEM.
I downloaded Bluetooth SW for TM4C123 v1.2. I found the example SPPDemo use handshake UART1 for CC256xQFNEM.
TM4C123GXL has some of these pins used for LED. So I modified pins as below
/* RX PC4 -> PB0 */
/* TX PC5 -> PB1 */
/* RTS PF0 -> PC4 */
/* CTS PF1 -> PC5 */
/* RESET PF2 -> PC6 */
I connect TM4C123GXL and CC256xQFNEM as below (TX <--> RX, CTS <--> RTS)
CC256xQFNEM TM4C123GXL
-------------------- -----------------
HCI_CTS_3v3 (RF1.3) UART1_RTS (PC4)
HCI_RX_3v3 (RF1.7) UART1_TX (PB1)
HCI_TX_3v3 (RF1.9) UART1_RX (PB0)
HCI_RTS_3v3 (RF2.18) UART1_CTS (PC5)
VBAT 3.3v
GND GND
I compiled and loaded to TM4C123GXL. Below is capture on terminal
## Start of Capture
OpenStack().
Stack Init Failed: -4.
Unable to open the stack.
## End of capture
I found signal SLOW_CLK on CC256xQFNEM schematic and found OSC1 not installed
So my questions are
1) What kind of error I have in the terminal capture above
2) Is SLOW_CLK required ? If so, what to get that SLOW_CLK from TM4C123GXL as I found there's XTAL 32K install on TM4C123GXL
Thanks,
~Duy-Ky
