SF32LB56-DevKit-LCD Development Board User Guide¶
Development Board Overview¶
SF32LB56-DevKit-LCD is a development board based on the SF32LB56xV series chip module. It is mainly used to develop various applications for displays with MIPI-DPI/SPI/DSPI/QSPI or MIPI-DBI(MCU/8080) interfaces.
The development board also includes analog MIC input, analog audio output, an SDIO interface, a USB-C interface, and TF card support, providing developers with abundant hardware interface resources. It can be used to develop drivers for peripherals with various interfaces, helping developers simplify the hardware development process and shorten product time to market.
The appearance of the SF32LB56_DevKit-LCD is shown in Figure 1 and Figure 2.
Feature List¶
This development board has the following features:
Module: onboard SF32LB56-MOD-A128R12N1 module based on the SF32LB56xV chip. The module configuration is as follows:
Standard SF32LB566VCB36 chip, with the built-in co-packaged configuration as follows:
8 MB OPI-PSRAM, interface frequency 144 MHz (may change in the official release)
4 MB OPI-PSRAM, interface frequency 144 MHz (may change in the official release)
1 Gb QSPI-NAND Flash, interface frequency 72 MHz, STR mode (may change in the official release)
48 MHz crystal
32.768 kHz crystal
Onboard antenna or IPEX antenna connector, selected through a 0-ohm resistor; onboard antenna by default
RF matching network and other resistor, capacitor, and inductor components
Dedicated display interface
MIPI-DPI, supports an FPC connector with the 正点原子 40-pin pinout
SPI/DSPI/QSPI, supports DDR-mode QSPI, routed out through a 40-pin header
8-bit MCU/8080, routed out through a 40-pin header
Supports touchscreens with an I2C interface
Audio
Supports analog MIC input
Analog audio output, onboard Class-D audio PA
USB
Type-C interface, supports the onboard USB-to-serial chip for firmware flashing and software DEBUG, and can be used to supply power
Type-C interface, supports USB2.0 FS, and can be used to supply power
SD Card
Supports TF cards using the SDIO interface, with an onboard Micro SD card slot
Functional Block Diagram¶
Component Introduction¶
The mainboard of the SF32LB56-DevKit-LCD development board is the core of the entire kit. This mainboard integrates the SF32LB56-MOD-A128R12N1 module and provides an LCD connector for MIPI-DPI (RGB-24bit)
Application Development¶
This section mainly describes how to set up the hardware and software, flash firmware to the development board, and develop applications.
Required Hardware¶
1 x SF32LB56-DevKit-LCD (including the SF32LB56-MOD-A128R12N1 module)
1 x display module
1 x USB 2.0 data cable (standard Type-A to Type-C)
1 x SWD debugger
1 x computer (Windows, Linux, or macOS)
Note
If you need both UART debugging and the USB interface, two USB 2.0 data cables are required;
Make sure to use an appropriate USB data cable. Some cables are for charging only and cannot be used for data transfer or firmware flashing.
Optional Hardware¶
1 x speaker
1 x TF Card
1 x 450 mAh lithium battery
Hardware Setup¶
Prepare the development board and load the first sample application:
Connect the display module to the corresponding LCD connector interface;
Open SiFli’s SifliTrace tool software and select the correct COM port;
Plug in the USB data cable to connect the PC to the USB-to-UART port on the development board;
The display lights up, and you can interact with the touchscreen using your finger.
Hardware setup is complete. You can now proceed with software setup.
Software Setup¶
For the SF32LB56-DevKit-LCD development board, refer to the software documentation for how to quickly set up the development environment.
Hardware Reference¶
This section provides more information about the development board hardware.
GPIO Assignment List¶
The table below lists the GPIO assignments for the SF32LB56-MOD-A128R12N1 module pins, used to control specific components or functions on the development board.
Pin |
Pin Name |
Function |
|---|---|---|
1 |
GND |
Ground |
2 |
PB_22 |
Touchscreen reset signal |
3 |
PA_47 |
MIPI-DPI(RGB) DE, LCD interface signal |
4 |
PA_42 |
MIPI-DPI(RGB) VSYNC, LCD interface signal |
5 |
PA_44 |
MIPI-DPI(RGB) HSYNC, LCD interface signal |
6 |
PB_17 |
UART4_TXD, BOOTROM default print port and small-core software debug interface |
7 |
PB_16 |
UART4_RXD, BOOTROM default print port and small-core software debug interface |
8 |
PA_45 |
MIPI-DPI(RGB) CLK, LCD interface signal |
9 |
PA_46 |
MIPI-DPI(RGB) B7, LCD interface signal |
10 |
PA_18 |
USB_DM |
11 |
PA_17 |
USB_DP |
12 |
PA_40 |
MIPI-DPI(RGB) B6, MCU 8080 DIO0, QSPI DIO2, E-Paper SDI, LCD interface signal |
13 |
PA_39 |
MIPI-DPI(RGB) B5, MCU 8080 DC, QSPI DIO1, E-Paper DC, LCD interface signal |
14 |
PB_32 |
HOME and long-press reset button |
15 |
PA_51 |
Touchscreen interrupt INT |
16 |
PA_41 |
MIPI-DPI(RGB) B4, MCU 8080 DIO1, QSPI DIO3, LCD interface signal |
17 |
PA_43 |
MIPI-DPI(RGB) B3, LCD interface signal |
18 |
PA_38 |
MIPI-DPI(RGB) B2, MCU 8080 RD, QSPI DIO0, LCD interface signal |
19 |
PA_37 |
MIPI-DPI(RGB) B1, MCU 8080 WR, QSPI CLK, E-Paper CLK, LCD interface signal |
20 |
PA_36 |
MIPI-DPI(RGB) B0, MCU 8080 CS, QSPI CS, E-Paper CS, LCD interface signal |
21 |
PA_35 |
MIPI-DPI(RGB) G7, LCD interface signal |
22 |
PA_31 |
MIPI-DPI(RGB) G6, MCU 8080 DIO5, LCD interface signal |
23 |
PA_29 |
MIPI-DPI(RGB) G5, MCU 8080 DIO3, LCD interface signal |
24 |
PA_34 |
MIPI-DPI(RGB) G4, MCU 8080 DIO7, LCD interface signal |
25 |
BOOT_MODE |
BOOT_MODE signal, =1 Download Mode; =0 user program mode |
26 |
VDD |
Main power supply input, 2.97~3.63V |
27 |
VDDSIP |
Co-packaged memory power supply input, 1.71~1.92V |
28 |
GND |
Ground |
29 |
VDDIO |
GPIO power supply input, 1.71~3.63V |
30 |
PA_01 |
Touchscreen I2C_SCL |
31 |
PA_02 |
Touchscreen I2C_SDA |
32 |
PA_03 |
UART1_TXD, big-core debug serial port |
33 |
PA_04 |
UART1_RXD, big-core debug serial port |
34 |
PA_15 |
SD1_DIO1, SD Card interface signal |
35 |
PA_22 |
SD1_DIO0, SD Card interface signal |
36 |
PA_27 |
SD1_CMD, SD Card interface signal |
37 |
PA_26 |
SD1_CLK, SD Card interface signal |
38 |
PA_20 |
SD1_DIO3, SD Card interface signal |
39 |
PA_12 |
SD1_DIO2, SD Card interface signal |
40 |
PA_33 |
MIPI-DPI(RGB) G3, MCU 8080 TE, QSPI TE, E-Paper BUSY, LCD interface signal |
41 |
PA_32 |
MIPI-DPI(RGB) G2, MCU 8080 DIO6, LCD interface signal |
42 |
GND |
Ground |
43 |
AU_DAC1P_OUT |
Analog Audio output signal |
44 |
AU_DAC1N_OUT |
Analog Audio output signal |
45 |
GND |
Ground |
46 |
MIC_BIAS |
MIC bias voltage |
47 |
MIC_ADC_IN |
MIC input signal |
48 |
PA_50 |
RSTB, LCD interface signal |
49 |
PA_30 |
MIPI-DPI(RGB) G1, MCU 8080 DIO4, LCD interface signal |
50 |
PA_28 |
MIPI-DPI(RGB) G0, MCU 8080 DIO2, LCD interface signal |
51 |
PA_25 |
MIPI-DPI(RGB) R7, LCD interface signal |
52 |
PA_23 |
MIPI-DPI(RGB) R6, LCD interface signal |
53 |
PA_21 |
MIPI-DPI(RGB) R5, LCD interface signal |
54 |
PA_19 |
MIPI-DPI(RGB) R4, LCD interface signal |
55 |
PA_24 |
MIPI-DPI(RGB) R3, LCD interface signal |
56 |
PA_16 |
MIPI-DPI(RGB) R2, LCD interface signal |
57 |
PA_13 |
MIPI-DPI(RGB) R1, LCD interface signal |
58 |
PA_14 |
MIPI-DPI(RGB) R0, LCD interface signal |
59 |
PB_23 |
BL PWM, LCD interface signal |
60 |
GND |
Ground |
61 |
PB_12 |
VBUS_DET, USB plug/unplug detection |
62 |
PB_11 |
GPIO LED control signal |
63 |
PB_09 |
RGBLED GPIO control signal |
64 |
PB_08 |
GPIO |
65 |
PB_35 |
KEY, function button |
66 |
PA_76 |
Insertion detection interface signal for the SD Card slot |
67 |
PA_06 |
MPI3_CS, SD2_DIO2, I2S1_MCLK, module internal Nor Flash interface signal; unavailable externally when the module supports internal Nor Flash |
68 |
PA_07 |
MPI3_DIO1, SD2_DIO3, I2S1_SDI, module internal Nor Flash interface signal; unavailable externally when the module supports internal Nor Flash |
69 |
PA_08 |
MPI3_DIO2, SD2_CLK, I2S1_SDO, module internal Nor Flash interface signal; unavailable externally when the module supports internal Nor Flash |
70 |
PA_09 |
MPI3_DIO0, SD2_CMD, I2S1_BCK, module internal Nor Flash interface signal; unavailable externally when the module supports internal Nor Flash |
71 |
PA_10 |
MPI3_CLK, SD2_DIO0, I2S1_LRCK, module internal Nor Flash interface signal; unavailable externally when the module supports internal Nor Flash |
72 |
PA_11 |
MPI3_DIO3, SD2_DIO1, module internal Nor Flash interface signal; unavailable externally when the module supports internal Nor Flash |
73 |
GND |
Ground |
74 |
GND |
Ground |
76 |
GND |
Ground |
77 |
GND |
Ground |
78 |
GND |
Ground |
79 |
PB_13 |
SWDIO, SWD interface signal |
80 |
PB_15 |
SWCLK, SWD interface signal |
81 |
PB_18 |
SPI3_CS, RGB screen SPI interface, WIFI GPIO interface signal |
82 |
PB_19 |
SPI3_CLK, RGB screen SPI interface, WIFI GPIO interface signal |
83 |
PB_20 |
SPI3_DI, used as the GPIO enable signal for the Audio amplifier |
84 |
PB_21 |
SPI3_DO, RGB screen SPI interface, WIFI GPIO interface signal |
85 |
PA_69 |
SPI2_DI, I2S1_SDI, PDM1_CLK, used as the WIFI SPI interface signal |
86 |
PA_64 |
SPI2_DO, I2S1_SDO, PDM1_DAT, used as the WIFI SPI interface signal |
87 |
PA_73 |
SPI2_CLK, I2S1_BCK, PDM2_CLK, used as the WIFI SPI interface signal |
88 |
PA_71 |
SPI2_CS, I2S1_LRCK, PDM2_DAT, used as the WIFI SPI interface signal |
89 |
PA_65 |
GPIO, I2S1_MCLK |
40P Pin Header Interface Definition¶
40-pin RGB FPC interface pinout definition¶
Compatible with the 正点原子 40-pin FPC interface pinout
Pin |
Pin Name |
Function |
|---|---|---|
1 |
5V |
5V power output |
2 |
5V |
5V power output |
3 |
R0 |
PA_14, LCDC1_DPI_R0 |
4 |
R1 |
PA_13, LCDC1_DPI_R1 |
5 |
R2 |
PA_16, LCDC1_DPI_R2 |
6 |
R3 |
PA_24, LCDC1_DPI_R3 |
7 |
R4 |
PA_19, LCDC1_DPI_R4 |
8 |
R5 |
PA_21, LCDC1_DPI_R5 |
9 |
R6 |
PA_23, LCDC1_DPI_R6 |
10 |
R7 |
PA_25, LCDC1_DPI_R7 |
11 |
GND |
Ground |
12 |
G0 |
PA_28, LCDC1_DPI_G0 |
13 |
G1 |
PA_30, LCDC1_DPI_G1 |
14 |
G2 |
PA_32, LCDC1_DPI_G2 |
15 |
G3 |
PA_33, LCDC1_DPI_G3 |
16 |
G4 |
PA_34, LCDC1_DPI_G4 |
17 |
G5 |
PA_29, LCDC1_DPI_G5 |
18 |
G6 |
PA_31, LCDC1_DPI_G6 |
19 |
G7 |
PA_35, LCDC1_DPI_G7 |
20 |
GND |
Ground |
21 |
B0 |
PA_36, LCDC1_DPI_B0 |
22 |
B1 |
PA_37, LCDC1_DPI_B1 |
23 |
B2 |
PA_38, LCDC1_DPI_B2 |
24 |
B3 |
PA_43, LCDC1_DPI_B3 |
25 |
B4 |
PA_41, LCDC1_DPI_B4 |
26 |
B5 |
PA_39, LCDC1_DPI_B5 |
27 |
B6 |
PA_40, LCDC1_DPI_B6 |
28 |
B7 |
PA_46, LCDC1_DPI_B7 |
29 |
GND |
Ground |
30 |
CLK |
PA_45, LCDC1_DPI_CLK |
31 |
HSYNC |
PA_44, LCDC1_DPI_HSYNC |
32 |
VSYNC |
PA_42, LCDC1_DPI_VSYNC |
33 |
DE |
PA_47, LCDC1_DPI_DE |
34 |
BL |
PB_23, BL_PWM |
35 |
CTP_RST |
PB_22 |
36 |
CTP_SDA |
PA_02, I2C4_SDA |
37 |
NC |
- |
38 |
CTP_SCL |
PA_01, I2C4_SCL |
39 |
CTP_INT |
PA_51 |
40 |
RESET |
PA_50 |
Power Supply Description¶
The SF32LB56-DevKit-LCD development board is powered through a USB Type-C interface. Both onboard USB Type-C connectors can power the board. For download and debugging, use the USB-to-UART port.
Flash the test firmware¶
Download the Impeller firmware flashing tool¶
Connect a USB cable to the USB-to-UART port, open SiFli Technology’s firmware flashing tool, and select the corresponding COM port and firmware.
Download Mode
Install the Mode jumper cap, power on, and after startup the board enters download mode, allowing the program to be downloaded.
Software Development Mode
Remove the Mode jumper cap, power on, and after startup the board enters serial log printing mode, which is software debugging mode.
For details, refer to Impeller Firmware Flashing Tool
J-Link SWD tool download and debugging¶
As shown in the two figures below, use DuPont wires to connect the corresponding IOs.
Obtaining Samples¶
Retail samples and small batches can be purchased directly from Taobao. Volume customers can email sales@sifli.com or contact customer service on Taobao for sales contact information. Open-source contributors may apply for free samples and can join QQ group 674699679 for discussion.