Hi
I ran the example " ble_app_hrs ". the consumption is 1.5mA, when I hold SWCLK and nRESET low,the consumption is fall to 0.9mA. how I could reduce the consumpion??
Hi
I ran the example " ble_app_hrs ". the consumption is 1.5mA, when I hold SWCLK and nRESET low,the consumption is fall to 0.9mA. how I could reduce the consumpion??
Hi:
I want to know whether the 1.5mA is correct ? By those ways, the consumption reduce a little bit.
Hi
After programming the chip you need to power cycle the chip to get it to normal mode. Pin reset will not do the job. After you flash it it will stay in debug mode.
I do not remember what the current consumption is in the heart rate example exactly. It depends on the connection interval. When are you measuring the current? If you connect with Master Control Panel, the connection interval will start off with 20ms, as this is the default setting in the MCP. After a few seconds, there will be connection parameter update request sent from nRF51 to the central (MCP in this case) to request a connection interval of 500ms. With the new connection interval current consumption is drastically redused. 0.9mA sounds a bit high for 500ms connecton interval, but could be normal for 20ms connection interval.
Furthermore, the documentation for the example states that it is not power optimized , as described here:
http://devzone.nordicsemi.com/documentation/nrf51/5.2.0/html/a00074.html#project_hrs_intro
Hi
After programming the chip you need to power cycle the chip to get it to normal mode. Pin reset will not do the job. After you flash it it will stay in debug mode.
I do not remember what the current consumption is in the heart rate example exactly. It depends on the connection interval. When are you measuring the current? If you connect with Master Control Panel, the connection interval will start off with 20ms, as this is the default setting in the MCP. After a few seconds, there will be connection parameter update request sent from nRF51 to the central (MCP in this case) to request a connection interval of 500ms. With the new connection interval current consumption is drastically redused. 0.9mA sounds a bit high for 500ms connecton interval, but could be normal for 20ms connection interval.
Furthermore, the documentation for the example states that it is not power optimized , as described here:
http://devzone.nordicsemi.com/documentation/nrf51/5.2.0/html/a00074.html#project_hrs_intro