日韩欧美亚洲另类一区,国产成人亚洲高清一区,丁香五月综合激情久久

SLAU647O July 2015 – April 2020

5.6.3 Target BSL Connection and BSL-Scripter Support

The MSP-FET can be used for communication with the target device bootloader (BSL) through the I²C and UART protocols. The activation of the different protocols is equivalent to the MSP-FET backchannel UART. See Table 6 for command details.

The BSL-Scripter software implements support for these activation commands and performs the correct sequence according to the communication interface (UART, I²C) that is specified in the script.

In MSP-FET BSL communication mode, flow control is not available, because this is not supported by the MSP target device BSL.

UART BSL: The MSP-FET BSL UART mode supports the following baud rates: 9600, 14400, 19200, 28800, 38400, 56000, 57600, and 115200. For the BSL UART, 8 + 1 + even parity is used.

I²C BSL: The MSP-FET is always the I²C master, and the target device BSL is always the I²C slave. 7-bit I²C addressing mode is used with a fixed I²C slave address of 0x48.

NOTE

If the MSP-FET is configured to support BSL communication, debugger functionality is disabled. To switch to debugger mode, either perform a power cycle (unplug the USB cable) or configure the baud rate to 8001. The BSL mode is disabled until sending a BSL entry baud rate command.

NOTE

MSP-FET BSL I²C pullup resistors must not exceed 2-kΩ resistance.

The typical I²C clock rate is 330 kHz.

Table 6. MSP-FET MSP Target BSL Activation Commands

Baud Rate	Command
9620	Set all UART or I²C pins to high impedance – no current flow into target device
9601	BSL entry sequence and power up 3.3 V (UART BSL) – debugger is disabled
100000 or 100001	BSL entry sequence and power up 3.3 V (I²C BSL) – debugger is disabled
400000 or 400001	BSL entry sequence and power up 3.3 V (I²C BSL) – debugger is disabled
9623	Power up 3.3 V
8001	Activate debugger
100002 or 400002	Configure communication and power up 3.3 V (MSP432 I²C BSL) – debugger is disabled, no BSL entry sequence
9602	Configure communication and power up 3.3 V (MSP432 UART BSL) – debugger is disabled, no BSL entry sequence

NOTE

The MSP-FET I²C interface is a software I²C implementation, which always runs with a speed of approximately 330 kHz. The four different speed configurations are supported for compatibility purposes with BSL-Scripter and the BSL-Rocket.