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nissa

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  1. I'm following the attached I2C example code provided by TI. The MCU is put into LPM0 with three interrupts enabled. On a pending RX interrupt, the ISR stores one byte of the receive buffer and clears the LPM0 SR bits taking the MCU out of LPM0 (lines 133-135). What's the reason for exiting LPM0? And why isn't the __bic_SR_register_on_exit(LPM0_bits) used for the NACIFG and BCNTIFG? msp430fr235x_euscib0_i2c_10.c
  2. Thanks for catching that. I wasn't able to get the backchannel UART working, but when I switched to using an external level shifter, it worked. 🤷‍♀️ I think I remember reading somewhere that the backchannel UART doesn't work outside of CCS, but I can't seem to find that thread. Anyway, using extra hardware works.
  3. Hello, I'm trying to set up the backchannel UART on the MSP430FR2355 launchpad so that it echoes back the characters I send it. I believe I've configured the UART on the msp430 correctly for 4800 baud. Please see the attached main.c.main.c.4800 When I try to send characters after opening a UART connection, I just see question marks. I'm stumped. I'm using mspgcc, mspdebug, and linux for what it's worth.
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