msp430x22x4_adc10_19.c

关于msp430f2274的官方最近提供的程序

//******************************************************************************
//   MSP430F22x4 Demo - ADC10, DTC Sample A0 64x, AVcc, HF XTAL
//
//   Description: For non-low power applications HF XTAL can source ACLK and be
//   used also for CPU MCLK, as in this example. DTC always uses MCLK for data
//   transfer. Though not required, ADC10 can also clock from HF XTAL as in this
//   example using ACLK.
//   MCLK = ACLK = ADC10CLK = HF XTAL in this example.
//   DTC Used to sample A0 64 times with reference to AVcc. Software writes to
//   ADC10SC to trigger sample burst. In Mainloop MSP430 waits in LPM0 to save
//   power until ADC10 conversion burst complete, ADC10_ISR(DTC) will force
//   exit from LPM0 in Mainloop on reti. In this example ACLK times sample
//   period (16x) and conversion (13x). DTC transfers conversion code to RAM
//   200h - 280h. P1.0 set at start of conversion burst, reset on completion.
//   //* HF XTAL NOT INSTALLED ON FET *//
//
//                MSP430F22x4
//             -----------------
//         /|\|              XIN|-
//          | |                 | HF XTAL (3