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Release leftover low power routing when a software I2C port is initialized #239

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Merged
lovyan03 merged 1 commit into from
Aug 7, 2026
Merged

Release leftover low power routing when a software I2C port is initialized #239

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15 changes: 14 additions & 1 deletion src/lgfx/v1/platforms/esp32/common.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1697,7 +1697,20 @@ namespace lgfx

cpp::result<void, error_t> init(int i2c_port)
{
if (isSoftPort(i2c_port)) { return soft_i2c_init(i2c_port); }
if (isSoftPort(i2c_port))
{
#if LGFX_LP_I2C_NUM > 0 && SOC_RTCIO_PIN_COUNT > 0
if (soft_i2c_valid_port(i2c_port))
{ // 低電力ポートのルーティングはリセットを跨いで残るため、前回実行が
// LP ポートとして使ったピンをソフトポートで取り直す場合にも返却が
// 必要になる。( see releaseLpPad )
auto& ctx = soft_i2c_ctx(i2c_port);
releaseLpPad((gpio_num_t)ctx.pin_sda);
releaseLpPad((gpio_num_t)ctx.pin_scl);
}
#endif
return soft_i2c_init(i2c_port);
}
if (i2c_port >= LGFX_I2C_PORT_NUM) { return cpp::fail(error_t::invalid_arg); }
gpio_num_t pin_sda = i2c_context[i2c_port].pin_sda;
gpio_num_t pin_scl = i2c_context[i2c_port].pin_scl;
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