Nathan Hartman b417ed4b40 Tiva GPTM timers: Implement 16-bit PWM mode ...

arch/arm/src/tiva/Kconfig:
    Remove EXPERIMENTAL dependency on TIVA_TIMER16_PWM.

arch/arm/src/tiva/common/tiva_timerlib.c:
    Fix wrong 32/16-bit ifdef checks.
    Add tiva_pwm16_sel_event() to choose GPTMCTL.TnEVENT value.
    Implement tiva_pwm_mode16().
    tiva_timer16_setinterval(): Fix wrong check for TIMER16_MODE_ONESHOT
        and TIMER16_MODE_PERIODIC. Was comparing to config->cmn.mode
        which can never have those values. This prevented interrupts being
        enabled. Compare to timer->mode instead.
    Add tiva_timer16pwm_setperiodduty() to set initial period, duty cycle,
        and enable interrupts if requested in GPTM peripheral. Interrupts
        are not enabled in NVIC until tiva_timer16_start() is called.
    Add tiva_timer16pwm_setduty() to update duty cycle at any time.

arch/arm/src/tiva/hardware/lm/lm3s_timer.h,
arch/arm/src/tiva/hardware/lm/lm4f_timer.h,
arch/arm/src/tiva/hardware/tm4c/tm4c123_timer.h,
arch/arm/src/tiva/hardware/tm4c/tm4c129_timer.h:
    Add missing defines; make surrounding defines consistent.

arch/arm/src/tiva/tiva_timer.h:
    Add new TIMER_FLAG_* configuration flags to enable configuring the
    16-bit PWM feature. Extend type of "flags" in tiva_timer32config_s
    and tiva_timer16config_s from 8- to 32-bits to allow more flags.

2019-08-09 11:03:44 -06:00

..

include

This commit removes CONFIG_ARCH_INT_DISABLEALL. In the normal course of things, interrupts must occasionally be disabled using the up_irq_save() inline function to prevent contention in use of resources that may be shared between interrupt level and non-interrupt level logic. Now the question arises, if we are using BASEPRI to disable interrupts and have high priority interrupts enabled (CONFIG_ARCH_HIPRI_INTERRUPT=y), do we disable all interrupts except SVCall (we cannot disable SVCall interrupts). Or do we only disable the "normal" interrupts?

2019-08-09 10:52:35 -06:00

src

Tiva GPTM timers: Implement 16-bit PWM mode

2019-08-09 11:03:44 -06:00

Kconfig

Beginning to update comments to reflect new organization of the boards/ sub-directory.

2019-08-08 08:46:54 -06:00