This folder contain the Project File for ESP32-M1 Reach Out.
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License: GNU General Public License v3.0
Project File for ESP32-M1 Reach Out
License: GNU General Public License v3.0
The RF impedance of ESP32-D0WDQ6 is 30+j10Ω, other RF components such as QPF4219 & RFSW8009 & DEA162450BT is 50Ω.
I noticed that there is some 12pF/56pF/3.3nH/7.5nH between them, I think some of these component values are wrong or unnecessary.
The correct matching value between 30+j10Ω and 50Ω should be something like shunt 2.8pF + series 2.6nH + shunt 2.0pF, and there is no need for any matching between components with impedance is 50Ω.
All these RF IC except RFSW8009 have internal DC block, so some DC blocker is unnecessary too.
Can you explain the purpose of these matching component values?
Thanks!
This is the code from your technical document:
config_gpio.gpio_cfg[0].gpio_select = 1;
config_gpio.gpio_cfg[0].gpio_num = LIGHTS_GPIO_LED_BLUE; // Antenna TX switch -- blue LED
config_gpio.gpio_cfg[1].gpio_select = 1;
config_gpio.gpio_cfg[1].gpio_num = LIGHTS_GPIO_LED_RED; // Antenna RX switch -- red LED
config_gpio.gpio_cfg[2].gpio_select = 0;
config_gpio.gpio_cfg[3].gpio_select = 0;
wifi_ant_config_t m_ant;
m_ant.rx_ant_mode = WIFI_ANT_MODE_ANT1;
m_ant.rx_ant_default = WIFI_ANT_MODE_ANT1;
m_ant.tx_ant_mode = WIFI_ANT_MODE_ANT0;
m_ant.enabled_ant0 = 1;
m_ant.enabled_ant1 = 2;
if(( err = esp_wifi_set_ant_gpio( &config_gpio )) != ESP_OK ) {
fprintf( stderr, "%s: wifi gpio: %s\n", TAG, esp_err_to_name( err ));
}
if(( err = esp_wifi_set_ant( &m_ant )) != ESP_OK ) {
fprintf( stderr, "%s: wifi ant: %s\n", TAG, esp_err_to_name( err ));
}
I connected two LEDs to show transmit and receive of the Wifi code.
Unfortunately, after upgrading to the latest IDF, this code does not work anymore.
Any insight from you why? You sure the index for enable_antx are correct?
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