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Merge pull request #4265 from DavePutz/pio_soft_reset 

Clear out PIOs and State Machines on RP2040 soft reset
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Scott Shawcroft 2021-03-03 08:43:57 -08:00 committed by GitHub
parent 55e41d43eb 8bf5dd93c1
commit 1d8933dd05
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 8 additions and 0 deletions
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8
ports/raspberrypi/common-hal/rp2pio/StateMachine.c
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@ -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"
@ -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) {