CC2530在Z-STACK中使用定时器

Q1: 如果CC2530一直使用定时器计时，功率大概是多少？

看数据手册，有给外设电流大小。或者接个万用表实测下电流就好了。

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Digital regulator on. 16-MHz RCOSC running. No radio, crystals, or peripherals active.
3.4 mA
Medium CPU activity: normal flash access(1), no RAM access
32-MHz XOSC running. No radio or peripherals active.
6.5 8.9 mA
Medium CPU activity: normal flash access(1), no RAM access
32-MHz XOSC running, radio in RX mode, –50-dBm input power, no peripherals active, CPU 20.5 mA idle
32-MHz XOSC running, radio in RX mode at -100-dBm input power (waiting for signal), no 24.3 29.6 mA Core current peripherals active, CPU idle Icore consumption 32-MHz XOSC running, radio in TX mode, 1-dBm output power, no peripherals active, CPU idle 28.7 mA
32-MHz XOSC running, radio in TX mode, 4.5-dBm output power, no peripherals active, CPU 33.5 39.6 mA idle
Power mode 1. Digital regulator on; 16-MHz RCOSC and 32-MHz crystal oscillator off; 0.2 0.3 mA 32.768-kHz XOSC, POR, BOD and sleep timer active; RAM and register retention
Power mode 2. Digital regulator off; 16-MHz RCOSC and 32-MHz crystal oscillator off; 1 2 μA 32.768-kHz XOSC, POR, and sleep timer active; RAM and register retention
Power mode 3. Digital regulator off; no clocks; POR active; RAM and register retention 0.4 1 μA
Peripheral Current Consumption (Adds to core current Icore for each peripheral unit activated)
Timer 1 Timer running, 32-MHz XOSC used 90 μA
Timer 2 Timer running, 32-MHz XOSC used 90 μA
Timer 3 Timer running, 32-MHz XOSC used 60 μA
Iperi Timer 4 Timer running, 32-MHz XOSC used 70 μA
Sleep timer Including 32.753-kHz RCOSC 0.6 μA
ADC When converting 1.2 mA
Erase 1 mA
Flash
Burst write peak current 6 mA

2.z-stack协议栈中，osal_start_timerEx()这个API计时精确吗？

毫秒级吧，看你的应用需求。