Hi-Link HLK-B30 Development Board with C-Chip CC8000 and OpenBK7231U Firmware

There are a few posts around that reference the C-Chip CC8000/BK7231U chip and that it can be found on the Hi-Link HLK-B30 development board, but experiments with it appear mixed in with several other threads, so here's a thread dedicated to the HLK-B30 and now with OpenBK7231U.

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Pin	Pin Name	Type	Descriptions
1	CEN	I	Chip enabled, highly effective
2	P26_PWM5	I/O	P26,PWM5
3	P24_PWM4	I/O	P24,PWM4
4	P23_TDO_F_S0	I/O	P23,ADC3
5	P22_TDI_F_SI	I/O	ES0, enter at command mode / restore factorysettings, please pull up if not used, same as P28
6	P21_TMS_F_CS	I/O	P21
7	P20_TCK_F_SC	I/O	P20
8	VBAT	P	3.3V power supply
9	P28	I/O	Enter at command mode / restore factory settings, please pull up if not in use, same as P22
10	P16	I/O	P16
11	P17	I/O	P17
12	P14	I/O	P14
13	P15	I/O	P15
14	P6_PWM0	I/O	P6,PWM0
15	GND	P	GND
16	P7_PWM1	I/O	P7,PWM1
17	P8_PWM2	I/O	WiFi indicator light
18	P9_PWM3	I/O	P9,PWM3
19	P1_URAT2_RXD	I/O	P1,UART2
20	P0_UART2_TXD	I/O	P0,UART2
21	P10_UART1_RXD	I/O	P10,UART1, For upgrading, command settingand transparent transmission
22	P11_UART1_TXD	I/O	P11,UART1, For upgrading, command setting and transparent transmission

Pin mapping for SPI flashing with CH341A/Python method - needed if writing bootloader from 0x0. BK7231U is like BK7231T - no rom. Note that on v2.1 of the board D16 is incorrectly labelled as "ESO". In v3.0 (pictured above) D16 is labelled correctly.

HLK-B30	CH341A
RST	D2
D17	SCK
ESO/D16 (between D17 and D15)	CS0
ESO (between GND and D1)	MOSI
D15	MISO
GND	GND

2mb EN25QH16 flash detected in NeoProgrammer when in SPI mode

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OpenBK7231U_QIO_1680_merge_55ebe0a12aba.bin from https://github.com/openshwprojects/OpenBK7231T_App/pull/1680 flashed in its entirety from 0

OTA test success. this was with quick GUI page

web app OTA filtering for .img not .rbl currently



Added after 7 [hours] 42 [minutes]:

akosschneemaier wrote:

hey @divadiow , Yes I was able to backup the fimrware. I already uploaded it to github: https://github.com/libretiny-eu/ltchiptool/issues/28#issuecomment-2054045065

I am still wating for my HLK-B30 to arrive so I can try flashing it.

@akosschneemaier this fw should work on your AiDot Leedarson module bulb if you still have it

To make sure that MAC and calibration data is correct TLV must be moved from 0x1FE000 to 0x1E0000 on BK7231U.