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native: Properly handled the TCK/SWCLK processor pin when doing clock tristating

This commit is contained in:
dragonmux 2022-08-09 23:33:10 +01:00 committed by Piotr Esden-Tempski
parent 1890426669
commit 9198f5b630
1 changed files with 9 additions and 1 deletions
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10
src/platforms/native/platform.c
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@ -340,8 +340,16 @@ void platform_request_boot(void)
void platform_target_clk_output_enable(bool enable) void platform_target_clk_output_enable(bool enable)
{ {
if (platform_hwversion() >= 6) if (platform_hwversion() >= 6) {
/* If we're switching to tristate mode, first convert the processor pin to an input */
if (!enable)
gpio_set_mode(TCK_PORT, GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT, TCK_PIN);
/* Reconfigure the logic levelt translator */
gpio_set_val(TCK_DIR_PORT, TCK_DIR_PIN, enable); gpio_set_val(TCK_DIR_PORT, TCK_DIR_PIN, enable);
/* If we're switching back out of tristate mode, we're now safe to make the processor pin an output again */
if (enable)
gpio_set_mode(TCK_PORT, GPIO_MODE_OUTPUT_50_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, TCK_PIN);
}
} }
void exti15_10_isr(void) void exti15_10_isr(void)