MSP low-power microcontroller forum - Recent Threads

MSP430G2553: MSP430 Interrupt number

Matthias Wendt50 — Sat, 11 Apr 2026 14:57:56 GMT

Part Number: MSP430G2553

Hi,

using an MSP430G2553 with a USART-Connection, i experience a permantent interrupt, which makes the program to halt.

Providing the programm with all the interrupt service routines that exist, i found, that interrupt 6 is the source.

My question is: what is the interrupt nr. 6? I searched in several Websites, but found no answer.

Yours Mathias

DP83TD555EVM: DP83TD555 & M0G3519 CLI Demo

Corey Ferrell — Fri, 10 Apr 2026 18:00:19 GMT

Part Number: DP83TD555EVM

I am looking for the files that support the CLI on the MSPM0.

.DP83TD555 CLI Demo.pdf

MSP430FR6047: reference meter at flows up to 300 LPH, but the FR6047 shows 0 flow from empty pipe to flowing

Analogics Rnd Solar — Fri, 10 Apr 2026 11:09:30 GMT

Part Number: MSP430FR6047

Hi ti teams,

I am checking with a reference meter at flows up to 300 LPH, but the FR6047 shows 0 flow. What USS configuration should I change to detect low flow?
this issue at initial step where empty pipe to flowing...
and it suddently spike to 3000LPH to 15LPH

Thank you in advance.

Best Regards,

Veeranna.

MSP430F5342: MSP430 Booting issue

Nachiketh Karanth — Thu, 09 Apr 2026 12:18:22 GMT

Part Number: MSP430F5342

Hi Team,

I am using TXS series level translator for FPGA UART signals in my board. When i connect the UART cable (TTL-232R-3V3) and power ON the board, MSP430 does not boot. When further debugging, i found that due to TXS series level translator used for UART, voltage is getting back-driven to MSP pins.

I do not have the option to replace this TXS with TXB series level translator nor can I isolate the signals connected to MSP430 that are back-driving voltage.

Without MSP430 booting, my board will not get any power as MSP430 is used to control power regulators. So, initially i can't even keep the MSP430 in reset. Can i have any inputs on how this can be solved, is there anything that can be implemented in software or hardware?

Thanks

MSPM0G3519: MCAN Communication Issue

Goraksh Thorve — Thu, 09 Apr 2026 09:23:31 GMT

Part Number: MSPM0G3519

Device: MSPM0G3519
SDK: MSPM0 SDK (using TI DriverLib examples)
Examples Used:
- mcan_message_rx
- mcan_single_message_tx

Setup:
I am using two boards(250kbps / 80% sampling bitrate):
- One configured as TX node
- One configured as RX node

Communication between nodes is working correctly:
- RX side receives message successfully
- RX interrupt (RF0N) is triggering and LED toggles

Issue:
On TX side, I am not able to trigger the MCAN Transmission Complete interrupt.

On RX side, sometimes recevied DL_MCAN_INTERRUPT_PEA interrupt.

Details:
- I have enabled interrupts using line 0
- Interrupt mask defined as:

- RX interrupt works fine
- TX message is successfully transmitted (verified on RX node)
- But TX complete interrupt (DL_MCAN_INTERRUPT_TC) is not triggering

Configuration:
- Using default example configurations with minor modifications
- Interrupt line 0 is enabled
- NVIC interrupt also enabled

-Using the extended ID

What I Checked:
- Communication between nodes verified
- RX FIFO interrupt working
- Interrupt line configured
- No bus errors observed

Expected Behavior:
- DL_MCAN_INTERRUPT_TC should trigger after successful transmission

Actual Behavior:
- No interrupt observed on TX side for transmission complete

Question:
What additional configuration is required to enable MCAN TX complete interrupt?
Is there any specific setting needed for TX buffers or interrupt routing?

In the bus-off state as per guide documents, needs to restart MCAN right (Getting Started with the MCAN (CAN FD) Module on MSPM0 MCUs Application note)

Additional Info:
- Using dedicated TX buffer (not FIFO)
-

MSPM0L1117: Invoking BSL via DSSM

Chris W — Wed, 08 Apr 2026 19:58:38 GMT

Part Number: MSPM0L1117
Other Parts Discussed in Thread: UNIFLASH,

In SLAU887A MSPM0 Bootloader User Guide it says:

"When debug interface is available, Bootloader invocation command can be sent through the Debug Subsystem Mailbox (DSSM). For more details on the DSSM command usage, please refer to MSPM0x_Technical_Reference_Manual DSSM commands section."

When I look in SLAU847E MSPM0 L-Series 32MHz Microcontrollers Tech Manual (May 2025) it only lists 5 DSSM commands: 1.) Factory Reset, 2.) Mass Erase, 3.) Password Authentication, 4.) Data Exchange, 5.) Wait for Debug. I do not see how any of these commands would be used to invoke the BSL. Does anyone know how to go about invoking the BSL via DSSM? What am I missing?

MSPM0L1105: Boot

Shuhei Goto — Wed, 08 Apr 2026 10:37:33 GMT

Part Number: MSPM0L1105

Hi team,

During boot, when the BSL Invoke pin is high, do PA0, PA1, PA22, and PA23 function as BSL I2C and BSL UART regardless of the software code? And when BSL Invoke is low, do they behave according to the software code?

Best regards,
Goto

MSPM0C1103-Q1: Pin configuration

Luke Park — Wed, 08 Apr 2026 08:43:52 GMT

Part Number: MSPM0C1103-Q1

Hi, Team

My customer, KyungShin is asking about pin configuration.

SWDIO/SWCLK can be configured as function of GPIO or Debug?
Schematic Design guide of SWDIO/SWCLK for J-tag Debug.

Please let me know if need more information

[FAQ] MSPM0 MCAN Application Demo - 20260408

Helic Chi — Wed, 08 Apr 2026 08:02:38 GMT

Part Number: MSPM0G3507

mcan_application_LP_MSPM0G3507_nortos_ticlang_20260408.zip

Here is the mcan application demo code for user easily start to used MSPM0 mcan module.

User can choose to use either fifo or buffer Tx/Rx, or combine Tx FIFO and Rx buffer together.

Recommend to use the demo by refering to the MSPM0 MCAN documents:

www.ti.com/.../slaaet4

LP-MSPM0G3507: Maximum Baud rate for the XDS110

Keith Barkley — Wed, 08 Apr 2026 01:39:27 GMT

Part Number: LP-MSPM0G3507
Other Parts Discussed in Thread: MSPM0G3507

What in the maximum baud rate the back channel UART can support via the XDS110?

MSP430G2553: SPI B with 25LC1024

Andrew Butler — Tue, 07 Apr 2026 21:27:58 GMT

Part Number: MSP430G2553

Why is the MSP430 clocking after the CS goes high again?

This is my configuration:

UCB0CTL1 |= UCSWRST; // Put in reset
UCB0CTL0 |= UCMST + UCSYNC + UCCKPH + UCMSB; // SPI Master, Sync, MSB
UCB0CTL1 |= UCSSEL_3; // SMCLK
UCB0BR0 = 16; // SPI Speed (SMCLK/2)
UCB0BR1 = 0;
IFG2 &= ~UCB0TXIFG;
IFG2 &= ~UCB0RXIFG;
UCB0CTL1 &= ~UCSWRST; // Release reset

This is how I transmit:

P2OUT &= ~BIT5; // Clear Chip Select (activate)

while (!(IFG2 & UCA0TXIFG)); // Wait for TX buffer
UCA0TXBUF = data; // Send data
while (!(IFG2 & UCA0RXIFG)); // Wait for RX complete
return UCA0RXBUF; // Return received data

P2OUT |= BIT5; // Set Chip Select (deactivate)

MSP430F6775A: Does C-GANG come with a usage quota??

MF — Tue, 07 Apr 2026 20:34:44 GMT

Part Number: MSP430F6775A

Hello,

We previously used MSP-GANG in our production process.

Since Texas Instruments introduced a new version of the gang programmer, we decided to purchase one from the following link:
https://www.ti.com/tool/C-GANG

After acquiring this programmer, we would like to clarify whether there is any limitation on its lifetime usage. For example, is there a maximum number of programming cycles (such as 500 uses)?

If such a limitation exists, it would be quite unfortunate for us because:

There is no clear indication of this restriction in the available documentation.
We purchase the hardware outright, as we did with MSP-GANG, so it is unclear why the number of uses should be restricted. This is not a printer that depends on consumables like toner. (here)

We would appreciate your clarification on this matter.

Thank you.

MSPM0G3507-Q1: MSPM0G3507-Q1 MCU CAN Stability issue

Pream krishna illa — Tue, 07 Apr 2026 20:22:00 GMT

Part Number: MSPM0G3507-Q1

Hi Team,

We are using the M0G3507QPMRQ1 device in our product. During testing, we observed that CAN data transmission is not consistently stable. At times, the communication stops unexpectedly and requires a manual reset or power cycle to resume operation.

Could you please help us with the following qurries:

We are currently using the internally generated SYSOSC clock (with an external 100 k ohms, 0.1% ROSC for frequency correction) for CAN block operation. Could this configuration impact CAN reliability, especially across the temperature range of –40°C to +85°C.
Is the use of an external high-frequency clock (HFX Clock) mandatory for reliable CAN operation.

MSP430F449: MSP430F449IPZR ISO13485 Document

Chris Wang — Tue, 07 Apr 2026 04:10:36 GMT

Part Number: MSP430F449

Hi Ti team,

Please provide the ISO13485 documents for MSP430F449IPZR, thank you.

MSPM0L1228-Q1: what's the min/max capacitance requirement for VDD and VBAT capacitors?

Pingjiang He — Tue, 07 Apr 2026 03:33:44 GMT

Part Number: MSPM0L1228-Q1

Hello,

we use the MCU : XM0L1228QPTRQ1.

What's the min/max capacitance requirement for VDD and VBAT capacitors? Including aging, DC‑bias, temperature, and tolerance effects.

The datasheet only show the nominal value. The min/max value are needed for WCCA.

MSP430FR2033: Unable to load MSP flash program

Arulmaria xavier — Mon, 06 Apr 2026 17:43:03 GMT

Part Number: MSP430FR2033
Other Parts Discussed in Thread: MSP-FET

We are unable to load the MSP flash program in the "IC 16-bit Microcontroller 3.6V RISC 16MHz 64-LQFP". Please refer to the attached image for a better understanding.

Ok below:

Error below :

MSPM0L1106: Not able to achieve 1uA on standby mode - sysconfig having Timer, I2C, ADC, UART and GPIO

Selvam Krishnan — Mon, 06 Apr 2026 12:25:26 GMT

Part Number: MSPM0L1106
Other Parts Discussed in Thread: SYSCONFIG, TPS8804

Hi TI Team,

Summary:
Please suggest conditions to get 1uA consumption on standby mode.

Details:

Circuit :
Input Volt to Circuit: 24V
Circuit contains : DC-DC converter, AFE IC-TI TPS 8804, MCU
DC-DC converter consumes: 60uA
Based on data sheet AFE by disabling Input Amplifier, Phot gain Amplifier, LED LDO SLC Tx and SLC RX, AFE consumes 15uA (MCU LDO enabled for supplying MCU volt)

We tried MCU 1uA current consumption on standby mode for the below code.
Main()
{
1. In sysconfig enabled the UART,I2C, GPIO and ADC, Timer and standby 0
2. MCU connected with AFE IC - TI TPS8804
3. In code:
a. Power Init ( Init of all peripheral)
b. Disable AFE Blocks - Input Amplifier, Photo gain Amplifier, LED LDO SLC Tx and SLC RX
c. Call DL_SYSCTL_enableSleepOnExit();
d. Disable power to I2C, ADC and UART
f. start timer of standby
g. While (1) {
WFI();
}
}

#if 1
void TIMER_0_INST_IRQHandler(void)
{

switch (DL_TimerG_getPendingInterrupt(TIMER_0_INST)) {
case DL_TIMER_IIDX_ZERO:

DL_TimerG_stopCounter(TIMER_0_INST);

DL_GPIO_togglePins(GPIO_LEDS_PORT,GPIO_LEDS_LD1_LED1_PIN);

DL_Timer_setLoadValue(TIMER_0_INST, TIMER_VALUE_5000_MILLISECONDS);

DL_TimerG_startCounter(TIMER_0_INST);
break;
default:
break;
}
}
#endif
Enclosed the code: StandbyCode.c

Based on this,
Expected Current is: 60+15+1 = 76uA
Actual Current we are getting: 120uA.

Please guide us to acheive 1uA (Totally 76uA) on standby mode.

Thanks
Selvam

MSPM0H3216-Q1: Unable to flash the LP-MSPM0H3216

Madhu Nuggehalli — Sat, 04 Apr 2026 06:45:31 GMT

Part Number: MSPM0H3216-Q1
Other Parts Discussed in Thread: LP-MSPM0H3216

Hello,

I am having a weird issue where I am trying to flash the out-of-box code onto the LP-MSPM0H3216 and I receive an error about the device being in a low power state. The recommendations are for me to do a BSL recovery / mass erase.

The issue with doing either is that the XDS110 on the Launchpad does not detect the MCU at all.

This issue is only on the H3216's Launchpad; others work fine.

I replaced the MCU on the launchpad with one recived as a sample - same issue. Cannot detect the MCU at all.

I am not sure where to proceed from here.

Any help would be appreciated.

~M

MSP-EXP432E401Y: Unable OpenOCD Fails to connect to onboard XDS110

John Storey — Fri, 03 Apr 2026 18:04:08 GMT

Part Number: MSP-EXP432E401Y
Other Parts Discussed in Thread: UNIFLASH

I am having trouble creating debug session. When I try to start openocd it fails to connect. I was using this fine for over a month up until yesterday. I want to use arm-none-eabi-gdp to debug an issue I am having initializing the network adapter. But now openocd cannot connect anymore.

I should point out that UniFlash still can connect and load images.

$ openocd -f board/ti_msp432_launchpad.cfg
Open On-Chip Debugger 0.12.0
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
cortex_m reset_config sysresetreq

Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Error: XDS110: failed to connect
Info : XDS110: disconnected

MSP430F5633: MSP430 USB evaluation board with ≥16 KB RAM

Michael V — Fri, 03 Apr 2026 04:56:38 GMT

Part Number: MSP430F5633
Other Parts Discussed in Thread: MSP430F5529, MSP-TS430PN80USB, MSP430F5659

Hello,

I am supporting a customer who is evaluating USB functionality on an MSP430, currently using the MSP‑EXP430F5529LP.

While the USB evaluation itself is working, the MSP430F5529 does not have sufficient RAM for the customer’s application. Therefore, we are looking for a TI evaluation board (not necessarily a LaunchPad) that allows USB evaluation using an MSP430 device with 16 KB or more of RAM.

So far, we have investigated:

Replacing the MCU on the MSP‑EXP430F5529LP (not compatible)
Using MSPM0 devices (not acceptable, as the customer specifically requires an MSP430)

Is there any available TI board with a mounted MSP430 (≥16 KB RAM) that supports USB functionality?

Any guidance or recommendations would be greatly appreciated.

Thank you for your support.

Best regards,
Michael

MSP430F5529: MSP430F5529 - SYSRIVECT does not redirect interrupts to application after bootloader jump

Stark — Thu, 02 Apr 2026 16:36:58 GMT

Part Number: MSP430F5529

Hello Team,

We are working on a firmware upgrade architecture for the MSP430F5529 with the following memory layout:

* Bootloader (Flash)
* Application (Flash)
* Download area (Flash)
* Interrupt vectors relocated to RAM using SYSRIVECT

- **Bootloader** at `0xC000–0xFFFF` — owns the real CPU vector table `0xFF80–0xFFFF`.
- **Application** at `0x4400–0xBEFF` — runs after bootloader jumps to it, needs its own Timer0_A0 (1ms tick) and USCI_A1 interrupts.

The bootloader stores the application entry pointer at `0xBEFE`. On every reset, the enters bootloader and jumps to the application at the address stored in `0xBEFE`.

We are using **SYSRIVECT** (SYSCTL register)
When enabled, CPU fetches interrupt vectors from **RAM (0x2400)** instead of flash

### Implementation Details

1. Bootloader and Application are built as **separate projects**
2. Both:
* Configure Timer and UART peripherals.
* Enable interrupts.
3. Application:

* Uses `#pragma vector` for ISRs
* Vector table placed in **Application flash (~0xBE80)**

Disabling `__enable_interrupt()` confirms the app runs but no tick; enabling it causes a crash.
This suggests some interrupt is firing to the bootloader's default stub at `0xEECE` which executes and halts the CPU.

Required guidance on how interrupts can be used in application or what is the working approach for an application to own its own interrupts when the bootloader retains the real vector table at `0xFF80–0xFFFF`?
Kindly let us know if you need more inputs.

MSPM0L1306: How to program using the LP-MSPM0L1306 development board?

Monica Pan — Thu, 02 Apr 2026 08:29:07 GMT

Part Number: MSPM0L1306

Now I have the LP-MSPM0L1306 development board, and I have installed CCS (Code Composer Studio) and the MSPM0 SDK. I would like to program a piece of code into the IC's flash and Nomain area. How should I proceed? Could you provide me with the detailed steps?

MSPM0G3519: Compilation Issue in ICU Module – Missing Include for memcpy

Prashant Singh Tomar — Wed, 01 Apr 2026 09:03:29 GMT

Part Number: MSPM0G3519

We are encountering a compilation issue in the ICU module related to the usage of the memcpy function.

Upon analysis, we observed that in other modules where memcpy is used, the header file <string.h> is explicitly included. However, in the ICU module, this header file is missing.

As a temporary workaround, we have added the following include in Icu_Priv.c:
#include <string.h>

This resolves the compilation issue on our end.

Request:

Could you please review this issue and clarify why the <string.h> include was missed in the ICU module? Additionally, please confirm whether this will be addressed in the upcoming release.

MSPM0G3519: Compilation Issue in CAN Driver – Missing Guard for CanIf_TriggerTransmit API

Prashant Singh Tomar — Wed, 01 Apr 2026 07:37:10 GMT

Part Number: MSPM0G3519

We are encountering a compilation issue in the CAN driver. Upon analysis, the issue is related to the CanIf_TriggerTransmit API.

This API is not mandatory; however, in the current implementation, there is no guard check for CanIf_TriggerTransmit in the following file:
\mcal\Can\V0\Can_Mcan.c

Request:

We request you to add an appropriate guard check for the CanIf_TriggerTransmit API in the CAN driver implementation to ensure successful compilation when the API is not enabled.

MSP430FR2676: How can I get application note

Ryuuichi machida — Wed, 01 Apr 2026 07:20:44 GMT

Part Number: MSP430FR2676

Hi,

I would like to ask you how I can get following application note.
https://www.ti.com/lit/slaa944

When I clicked above URL, I got URL error.
So, if possible, could you please send above application note ?

Best Regards,