bra txfc_disable
; tx enable:
- ;pin_h pall_perpicled
call led_green ; we're transmitting
bs_f PIE1, TXIE
return
;----------
txfc_disable
bc_f PIE1, TXIE
- ;pin_l pall_perpicled
goto led_red ; flow control forces us not to transmit
;----------------------------------------------------------------------
bra_nz tx_acknmra_send
; nothing at all to do:
bc_f PIE1, TXIE
- ;pin_z pall_perpicled
call led_black ; we're not transmitting
intrl_handled_nostack