You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
254 lines
7.6 KiB
254 lines
7.6 KiB
/* |
|
* This file is part of the MicroPython project, http://micropython.org/ |
|
* |
|
* The MIT License (MIT) |
|
* |
|
* Copyright (c) 2016 Scott Shawcroft for Adafruit Industries |
|
* |
|
* Permission is hereby granted, free of charge, to any person obtaining a copy |
|
* of this software and associated documentation files (the "Software"), to deal |
|
* in the Software without restriction, including without limitation the rights |
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
|
* copies of the Software, and to permit persons to whom the Software is |
|
* furnished to do so, subject to the following conditions: |
|
* |
|
* The above copyright notice and this permission notice shall be included in |
|
* all copies or substantial portions of the Software. |
|
* |
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
|
* THE SOFTWARE. |
|
*/ |
|
|
|
#include "shared-bindings/microcontroller/Pin.h" |
|
|
|
#include "atmel_start_pins.h" |
|
#include "hal/include/hal_gpio.h" |
|
|
|
#include "samd/pins.h" |
|
#include "supervisor/shared/rgb_led_status.h" |
|
|
|
#ifdef MICROPY_HW_NEOPIXEL |
|
bool neopixel_in_use; |
|
#endif |
|
#ifdef MICROPY_HW_APA102_MOSI |
|
bool apa102_sck_in_use; |
|
bool apa102_mosi_in_use; |
|
#endif |
|
#ifdef SPEAKER_ENABLE_PIN |
|
bool speaker_enable_in_use; |
|
#endif |
|
|
|
#define PORT_COUNT (PORT_BITS / 32 + 1) |
|
|
|
#ifdef SAMD51 |
|
#define SWD_MUX GPIO_PIN_FUNCTION_H |
|
#endif |
|
#ifdef SAMD21 |
|
#define SWD_MUX GPIO_PIN_FUNCTION_G |
|
#endif |
|
|
|
STATIC uint32_t never_reset_pins[PORT_COUNT]; |
|
|
|
void reset_all_pins(void) { |
|
uint32_t pin_mask[PORT_COUNT] = PORT_OUT_IMPLEMENTED; |
|
|
|
// Do not full reset USB lines. |
|
pin_mask[0] &= ~(PORT_PA24 | PORT_PA25); |
|
|
|
// Do not reset SWD when a debugger is present. |
|
if (DSU->STATUSB.bit.DBGPRES == 1) { |
|
pin_mask[0] &= ~(PORT_PA30 | PORT_PA31); |
|
} |
|
|
|
for (uint32_t i = 0; i < PORT_COUNT; i++) { |
|
pin_mask[i] &= ~never_reset_pins[i]; |
|
} |
|
|
|
gpio_set_port_direction(GPIO_PORTA, pin_mask[0] & ~MICROPY_PORT_A, GPIO_DIRECTION_OFF); |
|
gpio_set_port_direction(GPIO_PORTB, pin_mask[1] & ~MICROPY_PORT_B, GPIO_DIRECTION_OFF); |
|
#if PORT_BITS > 64 |
|
gpio_set_port_direction(GPIO_PORTC, pin_mask[2] & ~MICROPY_PORT_C, GPIO_DIRECTION_OFF); |
|
#endif |
|
#if PORT_BITS > 96 |
|
gpio_set_port_direction(GPIO_PORTD, pin_mask[3] & ~MICROPY_PORT_D, GPIO_DIRECTION_OFF); |
|
#endif |
|
|
|
// Configure SWD. SWDIO will be automatically switched on PA31 when a signal is input on |
|
// SWCLK. |
|
#ifdef SAMD51 |
|
gpio_set_pin_function(PIN_PA30, MUX_PA30H_CM4_SWCLK); |
|
#endif |
|
#ifdef SAMD21 |
|
gpio_set_pin_function(PIN_PA30, GPIO_PIN_FUNCTION_G); |
|
gpio_set_pin_function(PIN_PA31, GPIO_PIN_FUNCTION_G); |
|
#endif |
|
|
|
#ifdef MICROPY_HW_NEOPIXEL |
|
neopixel_in_use = false; |
|
#endif |
|
#ifdef MICROPY_HW_APA102_MOSI |
|
apa102_sck_in_use = false; |
|
apa102_mosi_in_use = false; |
|
#endif |
|
|
|
// After configuring SWD because it may be shared. |
|
#ifdef SPEAKER_ENABLE_PIN |
|
speaker_enable_in_use = false; |
|
gpio_set_pin_function(SPEAKER_ENABLE_PIN->number, GPIO_PIN_FUNCTION_OFF); |
|
gpio_set_pin_direction(SPEAKER_ENABLE_PIN->number, GPIO_DIRECTION_OUT); |
|
gpio_set_pin_level(SPEAKER_ENABLE_PIN->number, false); |
|
#endif |
|
} |
|
|
|
void never_reset_pin_number(uint8_t pin_number) { |
|
never_reset_pins[GPIO_PORT(pin_number)] |= 1 << GPIO_PIN(pin_number); |
|
} |
|
|
|
void reset_pin_number(uint8_t pin_number) { |
|
never_reset_pins[GPIO_PORT(pin_number)] &= ~(1 << GPIO_PIN(pin_number)); |
|
|
|
if (pin_number >= PORT_BITS) { |
|
return; |
|
} |
|
|
|
#ifdef MICROPY_HW_NEOPIXEL |
|
if (pin_number == MICROPY_HW_NEOPIXEL->number) { |
|
neopixel_in_use = false; |
|
rgb_led_status_init(); |
|
return; |
|
} |
|
#endif |
|
#ifdef MICROPY_HW_APA102_MOSI |
|
if (pin_number == MICROPY_HW_APA102_MOSI->number || |
|
pin_number == MICROPY_HW_APA102_SCK->number) { |
|
apa102_mosi_in_use = apa102_mosi_in_use && pin_number != MICROPY_HW_APA102_MOSI->number; |
|
apa102_sck_in_use = apa102_sck_in_use && pin_number != MICROPY_HW_APA102_SCK->number; |
|
if (!apa102_sck_in_use && !apa102_mosi_in_use) { |
|
rgb_led_status_init(); |
|
} |
|
return; |
|
} |
|
#endif |
|
|
|
if (pin_number == PIN_PA30 |
|
#ifdef SAMD51 |
|
) { |
|
#endif |
|
#ifdef SAMD21 |
|
|| pin_number == PIN_PA31) { |
|
#endif |
|
gpio_set_pin_function(pin_number, SWD_MUX); |
|
} else { |
|
gpio_set_pin_direction(pin_number, GPIO_DIRECTION_OFF); |
|
gpio_set_pin_function(pin_number, GPIO_PIN_FUNCTION_OFF); |
|
} |
|
|
|
#ifdef SPEAKER_ENABLE_PIN |
|
if (pin_number == SPEAKER_ENABLE_PIN->number) { |
|
speaker_enable_in_use = false; |
|
gpio_set_pin_function(pin_number, GPIO_PIN_FUNCTION_OFF); |
|
gpio_set_pin_direction(SPEAKER_ENABLE_PIN->number, GPIO_DIRECTION_OUT); |
|
gpio_set_pin_level(SPEAKER_ENABLE_PIN->number, false); |
|
} |
|
#endif |
|
} |
|
|
|
void common_hal_never_reset_pin(const mcu_pin_obj_t* pin) { |
|
never_reset_pin_number(pin->number); |
|
} |
|
|
|
void common_hal_reset_pin(const mcu_pin_obj_t* pin) { |
|
reset_pin_number(pin->number); |
|
} |
|
|
|
void claim_pin(const mcu_pin_obj_t* pin) { |
|
#ifdef MICROPY_HW_NEOPIXEL |
|
if (pin == MICROPY_HW_NEOPIXEL) { |
|
neopixel_in_use = true; |
|
} |
|
#endif |
|
#ifdef MICROPY_HW_APA102_MOSI |
|
if (pin == MICROPY_HW_APA102_MOSI) { |
|
apa102_mosi_in_use = true; |
|
} |
|
if (pin == MICROPY_HW_APA102_SCK) { |
|
apa102_sck_in_use = true; |
|
} |
|
#endif |
|
|
|
#ifdef SPEAKER_ENABLE_PIN |
|
if (pin == SPEAKER_ENABLE_PIN) { |
|
speaker_enable_in_use = true; |
|
} |
|
#endif |
|
} |
|
|
|
bool pin_number_is_free(uint8_t pin_number) { |
|
PortGroup *const port = &PORT->Group[(enum gpio_port)GPIO_PORT(pin_number)]; |
|
uint8_t pin_index = GPIO_PIN(pin_number); |
|
volatile PORT_PINCFG_Type *state = &port->PINCFG[pin_index]; |
|
volatile PORT_PMUX_Type *pmux = &port->PMUX[pin_index / 2]; |
|
|
|
if (pin_number == PIN_PA30 || pin_number == PIN_PA31) { |
|
if (DSU->STATUSB.bit.DBGPRES == 1) { |
|
return false; |
|
} |
|
if (pin_number == PIN_PA30 |
|
#ifdef SAMD51 |
|
) { |
|
#endif |
|
#ifdef SAMD21 |
|
|| pin_number == PIN_PA31) { |
|
#endif) { |
|
return state->bit.PMUXEN == 1 && ((pmux->reg >> (4 * pin_index % 2)) & 0xf) == SWD_MUX; |
|
} |
|
} |
|
|
|
return state->bit.PMUXEN == 0 && state->bit.INEN == 0 && |
|
state->bit.PULLEN == 0 && (port->DIR.reg & (1 << pin_index)) == 0; |
|
} |
|
|
|
bool common_hal_mcu_pin_is_free(const mcu_pin_obj_t* pin) { |
|
#ifdef MICROPY_HW_NEOPIXEL |
|
if (pin == MICROPY_HW_NEOPIXEL) { |
|
// Special case for Metro M0 where the NeoPixel is also SWCLK |
|
if (MICROPY_HW_NEOPIXEL == &pin_PA30 && DSU->STATUSB.bit.DBGPRES == 1) { |
|
return false; |
|
} |
|
return !neopixel_in_use; |
|
} |
|
#endif |
|
#ifdef MICROPY_HW_APA102_MOSI |
|
if (pin == MICROPY_HW_APA102_MOSI) { |
|
return !apa102_mosi_in_use; |
|
} |
|
if (pin == MICROPY_HW_APA102_SCK) { |
|
return !apa102_sck_in_use; |
|
} |
|
#endif |
|
|
|
#ifdef SPEAKER_ENABLE_PIN |
|
if (pin == SPEAKER_ENABLE_PIN) { |
|
return !speaker_enable_in_use; |
|
} |
|
#endif |
|
|
|
return pin_number_is_free(pin->number); |
|
} |
|
|
|
uint8_t common_hal_mcu_pin_number(const mcu_pin_obj_t* pin) { |
|
return pin->number; |
|
} |
|
|
|
void common_hal_mcu_pin_claim(const mcu_pin_obj_t* pin) { |
|
return claim_pin(pin); |
|
} |
|
|
|
void common_hal_mcu_pin_reset_number(uint8_t pin_no) { |
|
reset_pin_number(pin_no); |
|
}
|
|
|