From d04ce110f9b91c74c4c3c2248d938a58d0127598 Mon Sep 17 00:00:00 2001
From: Zhang Jun Hao <zhangjunhao@espressif.com>
Date: Tue, 21 May 2019 16:47:56 +0800
Subject: [PATCH] feat(esp8266): add set tx power via vdd33 function

---
 components/esp8266/include/esp_wifi.h | 26 ++++++++++++++++++++++++++
 components/esp8266/source/phy_init.c  | 20 ++++++++++++++++++++
 2 files changed, 46 insertions(+)

diff --git a/components/esp8266/include/esp_wifi.h b/components/esp8266/include/esp_wifi.h
index 6988a369..4fc2b319 100644
--- a/components/esp8266/include/esp_wifi.h
+++ b/components/esp8266/include/esp_wifi.h
@@ -827,6 +827,32 @@ esp_err_t esp_wifi_set_vendor_ie_cb(esp_vendor_ie_cb_t cb, void *ctx);
   */
 esp_err_t esp_wifi_set_max_tx_power(int8_t power);
 
+/**
+  * @brief     Adjust RF Tx Power according to VDD33; unit : 1/1024 V.
+  *
+  * @attention When TOUT pin is suspended, VDD33 can be got by esp_wifi_get_vdd33.
+  *            When TOUT pin is wired to external circuitry, esp_wifi_get_vdd33 can not be used.
+  * @attention This api only worked when it is called, please call this api every day or hour
+  *            according to power consumption.
+  *
+  * @param     vdd33 unit is 1/1024V, range [1900, 3300].
+  */
+void esp_wifi_set_max_tx_power_via_vdd33(uint16_t vdd33);
+
+/**
+  * @brief     Measure the power voltage of VDD3P3 pin 3 and 4; unit: 1/1024 V
+  *
+  * @attention esp_wifi_get_vdd33 can only be called when TOUT pin is suspended.
+  * @attention The 107th byte in esp_init_data_default.bin (0 ~ 127 bytes) is named as
+  *            vdd33_const. When TOUT pin is suspended, vdd33_const must be set as
+  *            0xFF, which is 255.
+  * @attention The return value of esp_wifi_get_vdd33 may be different in different Wi-Fi
+  *            modes, for example, in Modem-sleep mode or in normal Wi-Fi working mode.
+  *
+  * @return the power voltage of vdd33 pin 3 and 4
+  */
+uint16_t esp_wifi_get_vdd33(void);
+
 /**
   * @brief     Get maximum WiFi transmiting power
   *
diff --git a/components/esp8266/source/phy_init.c b/components/esp8266/source/phy_init.c
index 7f7e9437..11422d1e 100644
--- a/components/esp8266/source/phy_init.c
+++ b/components/esp8266/source/phy_init.c
@@ -335,3 +335,23 @@ void esp_phy_load_cal_and_init(phy_rf_module_t module)
 
     free(cal_data); // PHY maintains a copy of calibration data, so we can free this
 }
+
+uint16_t esp_wifi_get_vdd33(void)
+{
+    if (phy_init_data.params[107] != 0xFF ) {
+        ESP_LOGE(TAG, "Please set VDD33 const to 0xff");
+        return 0xFFFF;
+    }
+    extern uint16_t phy_get_vdd33();
+    uint16_t ret = phy_get_vdd33();
+    if (ret != 0xFFFF) {
+        ret = ret *12 / 11;
+    }
+    return ret;
+}
+
+void esp_wifi_set_max_tx_power_via_vdd33(uint16_t vdd33)
+{
+    extern void phy_vdd33_set_tpw(uint16_t vdd33);
+    phy_vdd33_set_tpw(vdd33);
+}
\ No newline at end of file