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PSRAM pins in ESP32 are now reserved only if needed #2022

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merged 2 commits into from
Sep 6, 2021
Merged

PSRAM pins in ESP32 are now reserved only if needed #2022

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67a4cff
Removing reserved pins
Ellerbach Aug 30, 2021
9592a88
Adding check for SPI RAM on boot
josesimoes Sep 2, 2021
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12 changes: 9 additions & 3 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 @@ -130,9 +130,15 @@ bool CPU_GPIO_Initialize()
// Make sure all pins are not reserved
memset(pinReserved, 0, sizeof(pinReserved));

// Reserve Pins 6-11 as used by Spi flash
for (int pinNumber = 6; pinNumber <= 11; pinNumber++)
CPU_GPIO_ReservePin(pinNumber, true);
// check if PSRAM it's available (querying largets free block available with SPIRAM capabilities)
if (heap_caps_get_largest_free_block(MALLOC_CAP_8BIT | MALLOC_CAP_32BIT | MALLOC_CAP_SPIRAM))
{
// Reserve Pins 6-11 as used by Spi flash
for (int pinNumber = 6; pinNumber <= 11; pinNumber++)
{
CPU_GPIO_ReservePin(pinNumber, true);
}
}

// Install ISR service for GPIO
esp_err_t ret = gpio_install_isr_service(0);
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