2. Ensure there is no DMA service request from the SPI by verifying that
DMA_HRS[HRSn] is 0 for the appropriate channel. If no service request is present,
disable the DMA channel by clearing the channel’s ERQ bit. If a service request is
present, wait until the request has been processed and the HRS bit reads zero.
12.6 Usage Guide
NOTE
User should configure DMA_TCDn_CSR[BWC] (bit 15-14) as
10 when another DMA channel is active.
Related application notes on this DMA module are as follows.
•
Using DMA for pulse counting on Kinetis
•
Using DMA and GPIO to emulate timer functionality on Kinetis Family devices
•
Using DMA to Emulate ADC Flexible Scan Mode on Kinetis K Series
Usage Guide
Kinetis KE1xF Sub-Family Reference Manual, Rev. 4, 06/2019
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NXP Semiconductors
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