From f22adc508149a0d5e564066062f64c11a06b0631 Mon Sep 17 00:00:00 2001 From: Luke Wren Date: Tue, 9 Feb 2021 14:15:00 +0000 Subject: [PATCH] Fix bad range check on sideset count in pio.h --- src/rp2_common/hardware_pio/include/hardware/pio.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/src/rp2_common/hardware_pio/include/hardware/pio.h b/src/rp2_common/hardware_pio/include/hardware/pio.h index b5354df..97efb44 100644 --- a/src/rp2_common/hardware_pio/include/hardware/pio.h +++ b/src/rp2_common/hardware_pio/include/hardware/pio.h @@ -174,12 +174,14 @@ static inline void sm_config_set_sideset_pins(pio_sm_config *c, uint sideset_bas * \ingroup sm_config * * \param c Pointer to the configuration structure to modify - * \param bit_count Number of bits to steal from delay field in the instruction for use of side set + * \param bit_count Number of bits to steal from delay field in the instruction for use of side set (max 5) * \param optional True if the topmost side set bit is used as a flag for whether to apply side set on that instruction * \param pindirs True if the side set affects pin directions rather than values */ static inline void sm_config_set_sideset(pio_sm_config *c, uint bit_count, bool optional, bool pindirs) { - assert(bit_count <= 32); + assert(bit_count <= 5); + if (optional) + assert(bit_count >= 1); c->pinctrl = (c->pinctrl & ~PIO_SM0_PINCTRL_SIDESET_COUNT_BITS) | (bit_count << PIO_SM0_PINCTRL_SIDESET_COUNT_LSB);