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Fix Gpio.Toggle for ESP32 #1744

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merged 1 commit into from
Oct 23, 2020
Merged

Fix Gpio.Toggle for ESP32 #1744

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23 changes: 21 additions & 2 deletions targets/FreeRTOS_ESP32/ESP32_WROOM_32/nanoCLR/Windows.Devices.Gpio/cpu_gpio.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,9 @@ struct gpio_input_state : public HAL_DblLinkedNode<gpio_input_state>
static HAL_DblLinkedList<gpio_input_state> gpioInputList; // Doulble LInkedlist for GPIO input status
static uint16_t pinReserved[TOTAL_GPIO_PORTS]; // reserved - 1 bit per pin

// memory for pin state
static uint16_t pinStateStore[TOTAL_GPIO_PORTS];

// Get pointer to gpio_input_state for Gpio pin
// return NULL if not found
gpio_input_state *GetInputState(GPIO_PIN pinNumber)
Expand Down Expand Up @@ -218,8 +221,24 @@ void CPU_GPIO_TogglePinState(GPIO_PIN pinNumber)
{
// platform DOES NOT support toggle
// need to do it "the hard way"
GpioPinValue newState = (GpioPinValue)(gpio_get_level((gpio_num_t)pinNumber) ^ GpioPinValue_High);
gpio_set_level((gpio_num_t)pinNumber, (uint32_t)newState);

uint32_t newValue;

// need to store pin state
int port = pinNumber >> 4, bit = 1 << (pinNumber & 0x0F);

if (pinStateStore[port] & bit)
{
pinStateStore[port] &= ~bit;
newValue = 0;
}
else
{
pinStateStore[port] |= bit;
newValue = 1;
}

gpio_set_level((gpio_num_t)pinNumber, newValue);
}

// ISR called by IDF
Expand Down