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Bump up fan frequency to 19kHz on EMC2103 #1606

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Bump up fan frequency to 19kHz on EMC2103 #1606

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acc2f4c
Bump up fan frequency to 19kHz
raivisr Mar 12, 2026
409586b
Merge branch 'bitaxeorg:master' into master
raivisr Mar 24, 2026
9fe1a8b
All fan controllers changed to fall within Intel 4 pin fan spec.
raivisr Mar 24, 2026
9fdae5f
Merge branch 'bitaxeorg:master' into master
raivisr Mar 26, 2026
b4646bc
Reverted EMC2101 to previous.
raivisr Mar 26, 2026
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1 change: 1 addition & 0 deletions main/thermal/EMC2103.c
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,7 @@ esp_err_t EMC2103_init(int temp_offset_param, bool flip_param)
// Configure the fan setting
ESP_RETURN_ON_ERROR(i2c_bitaxe_register_write_byte(EMC2103_dev_handle, EMC2103_CONFIGURATION1, 0), TAG, "Failed to configure EMC2103");
ESP_RETURN_ON_ERROR(i2c_bitaxe_register_write_byte(EMC2103_dev_handle, EMC2103_PWM_CONFIG, 0x00), TAG, "Failed to configure PWM");
ESP_RETURN_ON_ERROR(i2c_bitaxe_register_write_byte(EMC2103_dev_handle, EMC2103_PWM_BASE_FREQ, 0x00), TAG, "Failed to configure PWM base frequency");

return ESP_OK;

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5 changes: 5 additions & 0 deletions main/thermal/EMC2302.c
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Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,11 @@ esp_err_t EMC2302_init()

ESP_LOGI(TAG, "EMC2302 init");

ESP_RETURN_ON_ERROR(i2c_bitaxe_register_write_byte(EMC2302_dev_handle, EMC2302_PWM_BASEF123, 0x00), TAG, "Failed to set PWM base frequency");

ESP_RETURN_ON_ERROR(i2c_bitaxe_register_write_byte(EMC2302_dev_handle, EMC2302_PWM1_DIVIDE, 0x01), TAG, "Failed to set PWM1 divider");
ESP_RETURN_ON_ERROR(i2c_bitaxe_register_write_byte(EMC2302_dev_handle, EMC2302_PWM2_DIVIDE, 0x01), TAG, "Failed to set PWM2 divider");

// Set the minimum fan speed measured and reported to 500 RPM
ESP_RETURN_ON_ERROR(set_fan_range(EMC2302_FAN1_CONFIG1, RNG_500_RPM, &fan1_multiplier), TAG, "Failed to set fan 1 config");
ESP_RETURN_ON_ERROR(set_fan_range(EMC2302_FAN2_CONFIG1, RNG_500_RPM, &fan2_multiplier), TAG, "Failed to set fan 2 config");
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