Espressif ESP32-S2 Programming Manual page 134

Chapter 2. API Reference
WIFI_ANT_MODE_AUTO
Enable WiFi antenna 0 and 1, automatically select an antenna
WIFI_ANT_MODE_MAX
Invalid WiFi enabled antenna
enum wifi_phy_rate_t
WiFi PHY rate encodings.
Values:
WIFI_PHY_RATE_1M_L = 0x00
1 Mbps with long preamble
WIFI_PHY_RATE_2M_L = 0x01
2 Mbps with long preamble
WIFI_PHY_RATE_5M_L = 0x02
5.5 Mbps with long preamble
WIFI_PHY_RATE_11M_L = 0x03
11 Mbps with long preamble
WIFI_PHY_RATE_2M_S = 0x05
2 Mbps with short preamble
WIFI_PHY_RATE_5M_S = 0x06
5.5 Mbps with short preamble
WIFI_PHY_RATE_11M_S = 0x07
11 Mbps with short preamble
WIFI_PHY_RATE_48M = 0x08
48 Mbps
WIFI_PHY_RATE_24M = 0x09
24 Mbps
WIFI_PHY_RATE_12M = 0x0A
12 Mbps
WIFI_PHY_RATE_6M = 0x0B
6 Mbps
WIFI_PHY_RATE_54M = 0x0C
54 Mbps
WIFI_PHY_RATE_36M = 0x0D
36 Mbps
WIFI_PHY_RATE_18M = 0x0E
18 Mbps
WIFI_PHY_RATE_9M = 0x0F
9 Mbps
WIFI_PHY_RATE_MCS0_LGI = 0x10
MCS0 with long GI, 6.5 Mbps for 20MHz, 13.5 Mbps for 40MHz
WIFI_PHY_RATE_MCS1_LGI = 0x11
MCS1 with long GI, 13 Mbps for 20MHz, 27 Mbps for 40MHz
WIFI_PHY_RATE_MCS2_LGI = 0x12
MCS2 with long GI, 19.5 Mbps for 20MHz, 40.5 Mbps for 40MHz
WIFI_PHY_RATE_MCS3_LGI = 0x13
MCS3 with long GI, 26 Mbps for 20MHz, 54 Mbps for 40MHz
WIFI_PHY_RATE_MCS4_LGI = 0x14
MCS4 with long GI, 39 Mbps for 20MHz, 81 Mbps for 40MHz
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