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Espressif ESP32 User Manual

Espressif ESP32
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4. RF Performance Test
2. Choose "Tx packet" for "Test Mode" and set the "WiFi Rate", "BandWidth",
"Channel" and "Attenuation". Tx data rates are listed in Table 4-1.
For example, if the data rate is set to MCS7, bandwidth to 20M, and channel to 1, as
shown in Figure 4-1, you will get the log output described below:
tx_contin_en 1: continuous Tx mode with a duty ratio of 100%
tx_contin_en 0: Tx packet mode
tx_cbw40m_en 0: 11n HT20, 20M bandwidth
tx_cbw40m_en 1: 11n HT40, 40M bandwidth
3. Click on "stop" to end the Tx process and the returned message is "cmdstop".
4. Before switching to other channels or data rates, please click on “stop” to terminate
the current transmission.
!
Figure 4-1. ESP32 Wi-Fi Tx Test Log Output
Table 4-1. Tx Data Rates
11b
11g
11n
Parameter
Data rate
Parameter
Data rate
Parameter
Data rate
0x0
1 Mbps
0xb
6 Mbps
0x10
6.5 Mbps/MCS0
0x1
2 Mbps
0xf
9 Mbps
0x11
13 Mbps/MCS1
0x2
5.5 Mbps
0xa
12 Mbps
0x12
19.5 Mbps/MCS2
0x3
11 Mbps
0xe
18 Mbps
0x13
26 Mbps/MCS3
-
-
0x9
24 Mbps
0x14
39 Mbps/MCS4
-
-
0xd
36 Mbps
0x15
52 Mbps/MCS5
-
-
0x8
48 Mbps
0x16
58.5 Mbps/MCS6
-
-
0xc
54 Mbps
0x17
65 Mbps/MCS7
Espressif
! /!9 19
2018.03

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Espressif ESP32 Specifications

General IconGeneral
Clock SpeedUp to 240 MHz
SRAM520 KB
Wi-Fi802.11 b/g/n
BluetoothBluetooth v4.2 BR/EDR and BLE
GPIO Pins34
Operating Voltage2.2V to 3.6V
Operating Temperature-40°C to +125°C
ProcessorTensilica Xtensa LX6
Flash Memory4MB (varies by module)
ADC12-bit SAR ADC up to 18 channels
DAC2 channels of 8-bit DACs
I2C2 x I2C
I2S2 x I2S
InterfacesCAN 2.0
SPI4 SPI interfaces
UART3 x UART

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