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cc2530 PM3 Wake up?

lee hyungho
Prodigy 50 points

i hope you can help me out... i just setting PM3.


/** Test Sleep main program **/
#include <iocc2530.h>

void main(void)
{
 SLEEPCMD = (SLEEPCMD &  ~0x03) | 0x03; ,<-  PM3 set ?
 PCON |= 0x01;
}

current used

active mode(SLEEPCMD =0x00):  18 mA waste,

PM3 mode

(SLEEPCMD = (SLEEPCMD &  ~0x03) | 0x03): 117 μA <- PM1? (PM3 -> 0.4 μA)

it's right?

CC253X User Guide(Rev.A) P61

Power-mode setting(SLEEPCMD)

00: Active / Idle mode
01: Power mode 1 (PM1)
10: Power mode 2 (PM2)
11: Power mode 3 (PM3)

 

 

 

  • 0
    TI__Genius 10955 points

    Is 18 mA measuered with the radio off? If so, you have additional power consumption on your board. This could be due to other components on your board or load on the I/O. What board do you use when you measure the current consumption? Note also the following when measuring power consumption in low-power modes:

    • If you are in debug mode, the current consumption will be as in PM1, so you need to be out of debug mode.
    • All I/Os that are connected must be configured so that they do not drive any current (e.g, if connected to a LED the LED must be off)
    • All input pins that are driven externally must be configured as tri-state or be pulled to the same level as the external drive. So if a pin is driven low externally, the reset configuration of pull-up must be changed.
    • All un-connected I/O must be in a defined state (VDD or ground). For most I/O pins, the reset setting of a pull-up is OK. However P1.0 and P1.1 do not have pull-up/pull-down, and must be configured as outputs if not connected.
  • 0 in reply to hec
    Prodigy 50 points

    Thanks for your answer

    we want to know power mode 3 setting method,

    SLEEPCMD = (SLEEPCMD &  ~0x03) | 0x03;
    PCON |= 0x01;

    we setting like that but total power consumption is 117uA,
    in the specification pm3 mode is 0.4uA consumption.

    what is the correct method for pm3 setting

  • 0 in reply to lee hyungho
    TI__Genius 10955 points

    This is a correct method for setting PM3, although you should make sure that the PCON = 1 (no need for |= - there are no other bits in PCON) instruction is aligned in memory according to Section 4.2 in the user guide. If you see a current consumption of 117 uA, the problem is not in the instruction taking you to sleep. You should check the items I listed previously. What board are you using, and how do you measure the current consumption?