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Output control on debug clock and data lines #146

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Output control on debug clock and data lines #146

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28b70b6
Disable output on the clock line when the probe is deinited. Re-enabl…
julianagentile Jul 9, 2024
f1f3133
Disable output on the data line when the probe is deinited. Re-enable…
julianagentile Jul 10, 2024
349d156
Replace hard-coded pin defines with already existing pin definitions
julianagentile Jul 10, 2024
ff0a417
Replace GPIO-specific OD bit defines with generic OD bit define
julianagentile Jul 11, 2024
d70f336
Replace GPIO-specific OD bit defines with generic OD bit define
julianagentile Jul 11, 2024
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8 changes: 8 additions & 0 deletions src/probe.c
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,9 @@
#include "probe.pio.h"
#include "tusb.h"

#define PADS_BANK0_GPIO12 _u(12)
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#define PADS_BANK0_GPIO14 _u(14)

#define DIV_ROUND_UP(m, n) (((m) + (n) - 1) / (n))

// Only want to set / clear one gpio per event so go up in powers of 2
Expand Down Expand Up @@ -147,6 +150,8 @@ void probe_write_mode(void) {

void probe_init() {
if (!probe.initted) {
hw_clear_bits(&padsbank0_hw->io[PADS_BANK0_GPIO12], PADS_BANK0_GPIO12_OD_BITS);
hw_clear_bits(&padsbank0_hw->io[PADS_BANK0_GPIO14], PADS_BANK0_GPIO14_OD_BITS);
uint offset = pio_add_program(pio0, &probe_program);
probe.offset = offset;

Expand Down Expand Up @@ -174,5 +179,8 @@ void probe_deinit(void)
probe_assert_reset(1); // de-assert nRESET

probe.initted = 0;

hw_set_bits(&padsbank0_hw->io[PADS_BANK0_GPIO12], PADS_BANK0_GPIO12_OD_BITS);
hw_set_bits(&padsbank0_hw->io[PADS_BANK0_GPIO14], PADS_BANK0_GPIO14_OD_BITS);
}
}