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Clear out PIOs and State Machines on RP2040 soft reset #4265

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Mar 3, 2021
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8 changes: 8 additions & 0 deletions ports/raspberrypi/common-hal/rp2pio/StateMachine.c
Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,7 @@
#include "src/rp2_common/hardware_dma/include/hardware/dma.h"
#include "src/rp2_common/hardware_pio/include/hardware/pio_instructions.h"
#include "src/rp2040/hardware_structs/include/hardware/structs/iobank0.h"
#include "src/rp2_common/hardware_irq/include/hardware/irq.h"

#include "lib/utils/interrupt_char.h"
#include "py/obj.h"
Expand Down Expand Up @@ -101,6 +102,13 @@ void reset_rp2pio_statemachine(void) {
_reset_statemachine(pio, j, false);
}
}
for (uint8_t irq=PIO0_IRQ_0; irq <= PIO1_IRQ_1; irq++) {
irq_handler_t int_handler = irq_get_exclusive_handler(irq);
if (int_handler > 0) {
irq_set_enabled (irq, false);
irq_remove_handler(irq,int_handler);
}
}
}

STATIC uint32_t _check_pins_free(const mcu_pin_obj_t * first_pin, uint8_t pin_count, bool exclusive_pin_use) {
Expand Down