andry/EMS-ESP32
1
0
Fork 0
mirror of https://github.com/emsesp/EMS-ESP32.git synced 2026-01-26 16:49:11 +03:00
Code Issues Packages Projects Releases Wiki Activity

fix mix-up of GPIOs

Browse Source
This commit is contained in:
proddy
2026-01-04 21:33:30 +01:00
parent 712a8537c9
commit 84af132e2c
1 changed files with 36 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

74
src/core/system.cpp
View File

@@ -2799,7 +2799,10 @@ uint8_t System::systemStatus() {
return systemStatus_;
}
// takes a string range like "6-11, 1, 23, 24-48" which has optional ranges and single values and converts to a vector of ints
// takes two arguments:
// the first is the full range of pins to consider
// the second is a string range of GPIOs to exclude, like "6-11, 1, 23, 24-48"
// returns a vector array of GPIOs that are valid for use
std::vector<uint8_t, AllocatorPSRAM<uint8_t>> System::string_range_to_vector(const std::string & range, const std::string & exclude) {
std::vector<uint8_t, AllocatorPSRAM<uint8_t>> gpios;
std::string::size_type pos = 0;
@@ -2876,7 +2879,7 @@ std::vector<uint8_t, AllocatorPSRAM<uint8_t>> System::string_range_to_vector(con
}
// initialize a list of valid GPIOs based on the ESP32 board
// string_to_vector() take two strings, the first is the range of GPIOs to use, the second is the range of GPIOs to exclude
// string_to_vector() take two strings, the first is the range of GPIOs to use, the second is a list of GPIOs to exclude
// note: we always allow 0, which is used to indicate Dallas or LED is disabled
void System::set_valid_system_gpios() {
valid_system_gpios_.clear(); // reset system list
@@ -2884,49 +2887,44 @@ void System::set_valid_system_gpios() {
// get free gpios based on board/platform type
#if CONFIG_IDF_TARGET_ESP32C3
// not valid:
// 20-21 are UART0
valid_system_gpios_ = string_range_to_vector("0-21", "20-21");
// non valid GPIOs:
// 3, 9-10 are strapping pins that can affect boot behaviour
// 8 is connected to the internal ULP (Ultra Low Power) coprocessor and should be avoided for external connections
// 11 is used for internal flash connection
// notes on valid GPIOs:
// there are no input only pins on a C3
valid_system_gpios_ = string_range_to_vector("0-21", "3, 9-10, 8, 11");
#elif CONFIG_IDF_TARGET_ESP32S2
// not valid:
// 6-11 are used for SPI flash and PSRAM
// 16-17 are also used for SPI flash and PSRAM
// 45-46 are strapping pins
// 43-44 are UART0
// notes:
// non valid GPIOs:
// 3, 45-46 are strapping pins that can affect boot behaviour
// 6-11 and 35 are used for SPI flash and PSRAM
// notes on valid GPIOs:
// 34-39 are input only
valid_system_gpios_ = string_range_to_vector("0-46", "6-11, 16-17, 45-46, 43-44");
valid_system_gpios_ = string_range_to_vector("0-46", "3, 45-46, 6-11, 35");
#elif CONFIG_IDF_TARGET_ESP32S3
// not valid:
// 43-44 are UART0 pins
// 19-20 are USB-JTAG pins
// 33-37 for Octal SPI (SPIIO4 through SPIIO7 and SPIDQS) on 32MB boards
// 3, 45-46 are strapping pins
// 26-32 are typically used for SPI flash and PSRAM
// 42 transitions low on reset, slower than other GPIOs which can cause issues in time-sensitive applications
// notes:
// 34-39 are input only, and can be used
// 47 and 48 are valid on a Wemos S3 (https://github.com/emsesp/EMS-ESP32/issues/2874)
valid_system_gpios_ = string_range_to_vector("0-48", "43-44, 19-20, 33-37, 3, 45-46, 26-32, 42");
#elif CONFIG_IDF_TARGET_ESP32
// not valid:
// non valid GPIOs:
// 3 is a strapping pin that could affect boot behaviour if pulled high/low at boot time
// 6-11 are used for SPI flash and PSRAM
// 16-17 are also used for SPI flash and PSRAM
// 26-31 are used for SPI flash and PSRAM
// 19-20 are used for JTAG-USB
// 45-46 are strapping pins
// 1 & 3 are UART0 pins, but used for some eth-boards (BBQKees-E32, OlimexPOE)
// 42 transitions low on reset, slower than other GPIOs which can cause issues in time-sensitive applications
// notes:
// 32 is reserved for LED on E32V2_2 boards
// 34-39 are input only (ADC1), and can be used
// 19-20 are USB-JTAG pins
// 26-32 are usually used for SPI flash and PSRAM and not recommended for other use
// 33-37 are used for Octal SPI flash or PSRAM
// 45-46 are strapping pins that can affect boot behaviour
// notes on valid GPIOs:
// 11-20 are ADC analog input only pins
// 47 and 48 are valid on a Wemos S3 (https://github.com/emsesp/EMS-ESP32/issues/2874)
// 16 and 17 is UART2, which we allow
valid_system_gpios_ = string_range_to_vector("0-48", "3, 6-11, 19-20, 26-32, 33-37, 45-46");
#elif CONFIG_IDF_TARGET_ESP32
// non valid GPIOs:
// 2, 4, 12-15, 25-27 are ADC2 and can conflict with the Wi-Fi module (12-15 is also USB-JTAG)
// 6-11 and 16-17 are used for SPI flash and PSRAM
// notes on valid GPIOs:
// 25-26 are DAC (Digital-to-Analog Converter) pins, and can be used
// 36 & 39 are reserved for the internal supply_voltage and core_voltage
// 34-39 are input only, and can't be used for output (36=internal supply_voltage, 39=internal core_voltage on a BBQKees E32V2.2)
if (ESP.getPsramSize() > 0) {
// if psram is enabled remove pins 16 and 17 from the list
valid_system_gpios_ = string_range_to_vector("0-39", "6-11, 16-17, 26-31, 19-20, 45-46, 1, 3, 42");
valid_system_gpios_ = string_range_to_vector("0-39", "2, 4, 12-15, 25-27, 6-11, 16-17"); // remove PSRAM pins from the list
} else {
valid_system_gpios_ = string_range_to_vector("0-39", "19-20, 45-46, 1, 3, 42");
valid_system_gpios_ = string_range_to_vector("0-39", "2, 4, 12-15, 25-27");
}
#elif defined(EMSESP_STANDALONE)
valid_system_gpios_ = string_range_to_vector("0-39");