MSPM0G3507: Disable Power while putting device in sleep or low power mode

Meet Patel

Part Number: MSPM0G3507

Tool/software:

Hi,

I am trying to put my device (MSPM0G3507) in low power mode by below lines:

Before putting my device into sleep mode i also need to disable respective peripherals to maintain 3uA consumption in sleep mode.

I have written following code to maintain consumption of 3uA.

So, my question is : Is it necessary to do all these setting to peripherals while entering into low power mode? or am i doing something wrong.

over 1 year ago

0 Helic Chi over 1 year ago

TI__Mastermind 19337 points

Hi, Meet

Do you use syscfg? (system configuration tool)
If you are using syscfg, you can directly reset all peripherals like this:

    DL_GPIO_reset(GPIOA);
    DL_GPIO_reset(GPIOB);
    DL_MCAN_reset(MCAN0_INST);

And then after waking up, call syscfg generated function to configure all peripherals:

SYSCONFIG_WEAK void SYSCFG_DL_init(void)
{
    SYSCFG_DL_initPower();
    SYSCFG_DL_GPIO_init();
    /* Module-Specific Initializations*/
    SYSCFG_DL_SYSCTL_init();
    SYSCFG_DL_MCAN0_init();
    SYSCFG_DL_SYSCTL_CLK_init();
}

Regards,

Helic

0 Meet Patel over 1 year ago in reply to Helic Chi

Prodigy 50 points

Hello Helic,

Thanks for your reply.

Yes, we are using syscfg.

As per your suggestion, I have modified my code as below.

But still while entering into low power mode, consumption is 500-600uA .

So, is there any more commands that is required?

Regards,

Meet

0 Helic Chi over 1 year ago in reply to Meet Patel

TI__Mastermind 19337 points

Hi, Meet

The method I mentioned didn't reset the IOMUX function.

Only shutdown the M0's internal peripherals.

I think there is still some consumption from IO.

Try to configure these IOMUX configuration like what you previous does.

Such as code below to add pulldown resistor:

IOMUX->SECCFG.PINCM[pincmIndex] = ((IOMUX->SECCFG.PINCM[pincmIndex])&(0xFFFCFFFF))|(0x00030000);

Regards,

Helic

0 Meet Patel over 1 year ago in reply to Helic Chi

Prodigy 50 points

Hello Helic,

But we have observed, For the different peripherals we need to do custom code. for example

/*sleep I2C_0*/
DL_I2C_disableController(I2C_0_INST);
DL_GPIO_initPeripheralInputFunctionFeatures(GPIO_I2C_0_IOMUX_SDA,
GPIO_I2C_0_IOMUX_SDA_FUNC, DL_GPIO_INVERSION_DISABLE,
DL_GPIO_RESISTOR_PULL_DOWN, DL_GPIO_HYSTERESIS_DISABLE,
DL_GPIO_WAKEUP_DISABLE);
DL_GPIO_initPeripheralInputFunctionFeatures(GPIO_I2C_0_IOMUX_SCL,
GPIO_I2C_0_IOMUX_SCL_FUNC, DL_GPIO_INVERSION_DISABLE,
DL_GPIO_RESISTOR_PULL_DOWN, DL_GPIO_HYSTERESIS_DISABLE,
DL_GPIO_WAKEUP_DISABLE);

/*sleep SPI_1*/
DL_GPIO_initPeripheralOutputFunction(
GPIO_SPI_1_IOMUX_SCLK, DL_GPIO_RESISTOR_PULL_DOWN);
DL_GPIO_initPeripheralOutputFunction(
GPIO_SPI_1_IOMUX_PICO, DL_GPIO_RESISTOR_PULL_DOWN);
DL_GPIO_initPeripheralInputFunction(
GPIO_SPI_1_IOMUX_POCI, DL_GPIO_RESISTOR_PULL_DOWN);

/*sleep Uart_0*/
DL_UART_Main_disable(UART_0_INST);
DL_GPIO_initPeripheralInputFunction(
GPIO_UART_0_IOMUX_RX, IOMUX_PINCM22_PF_UNCONNECTED);
DL_GPIO_initPeripheralInputFunction(
GPIO_UART_0_IOMUX_TX, IOMUX_PINCM21_PF_UNCONNECTED);

So this is required or we are doing something wrong. or is there any shortcut.?