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Code Issues Releases Wiki Activity

[esp8266] Store GPIO initialization arrays in PROGMEM to save RAM

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This commit is contained in:
J. Nick Koston
2025-09-03 22:53:24 -05:00
parent 23c6650902
commit 897bb4d13f
3 changed files with 7 additions and 6 deletions
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4
esphome/components/esp8266/core.cpp
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@@ -58,8 +58,8 @@ extern "C" void resetPins() { // NOLINT
#ifdef USE_ESP8266_EARLY_PIN_INIT #ifdef USE_ESP8266_EARLY_PIN_INIT
for (int i = 0; i < 16; i++) { for (int i = 0; i < 16; i++) {
uint8_t mode = ESPHOME_ESP8266_GPIO_INITIAL_MODE[i]; uint8_t mode = pgm_read_byte(&ESPHOME_ESP8266_GPIO_INITIAL_MODE[i]);
uint8_t level = ESPHOME_ESP8266_GPIO_INITIAL_LEVEL[i]; uint8_t level = pgm_read_byte(&ESPHOME_ESP8266_GPIO_INITIAL_LEVEL[i]);
if (mode != 255) if (mode != 255)
pinMode(i, mode); // NOLINT pinMode(i, mode); // NOLINT
if (level != 255) if (level != 255)

5
esphome/components/esp8266/core.h
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@@ -3,9 +3,10 @@
#ifdef USE_ESP8266 #ifdef USE_ESP8266
#include <cstdint> #include <cstdint>
#include <pgmspace.h>
extern const uint8_t ESPHOME_ESP8266_GPIO_INITIAL_MODE[16]; extern const uint8_t ESPHOME_ESP8266_GPIO_INITIAL_MODE[16] PROGMEM;
extern const uint8_t ESPHOME_ESP8266_GPIO_INITIAL_LEVEL[16]; extern const uint8_t ESPHOME_ESP8266_GPIO_INITIAL_LEVEL[16] PROGMEM;
namespace esphome { namespace esphome {
namespace esp8266 {} // namespace esp8266 namespace esp8266 {} // namespace esp8266

4
esphome/components/esp8266/gpio.py
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@@ -199,11 +199,11 @@ async def add_pin_initial_states_array():
cg.add_global( cg.add_global(
cg.RawExpression( cg.RawExpression(
f"const uint8_t ESPHOME_ESP8266_GPIO_INITIAL_MODE[16] = {{{initial_modes_s}}}" f"const uint8_t ESPHOME_ESP8266_GPIO_INITIAL_MODE[16] PROGMEM = {{{initial_modes_s}}}"
) )
) )
cg.add_global( cg.add_global(
cg.RawExpression( cg.RawExpression(
f"const uint8_t ESPHOME_ESP8266_GPIO_INITIAL_LEVEL[16] = {{{initial_levels_s}}}" f"const uint8_t ESPHOME_ESP8266_GPIO_INITIAL_LEVEL[16] PROGMEM = {{{initial_levels_s}}}"
) )
) )