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BLUENRG-2 Datasheet(PDF) 45 Page - STMicroelectronics

No. de pieza BLUENRG-2
Descripción Electrónicos  Bluetooth® low energy wireless system-on-chip
PDF  190 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

BLUENRG-2 Datasheet(HTML) 45 Page - STMicroelectronics

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BlueNRG-2
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3.7.2.5
Error management
A DMA transfer error can be generated by reading from or writing to a reserved address
space. When a DMA transfer error occurs during a DMA read or a write access, the faulty
channel is automatically disabled through a hardware clear of its EN bit in the
corresponding Channel configuration register (DMA_CCRx). The channel's transfer error
interrupt flag (TEIF) in the ISR register is set and an interrupt is generated if the transfer
error interrupt enable bit (TEIE) in the DMA_CCRx register is set.
3.7.2.6
Interrupts
An interrupt can be produced on a Half-transfer, Transfer complete or Transfer error for
each DMA channel. Separate interrupt enable bits are available for flexibility.
Table 42: DMA interrupt requests
Interrupt event
Event flag
Enable control bit
Half-transfer
HTIF
HTIE
Transfer complete
TCIF
TCIE
Transfer error
TEIF
TEIE
3.7.2.7
DMA request mapping
The eight requests from the peripherals (SPI, I2Cx[1,2] and UART) are multiplexed before
entering DMA with the ADC request. For each channel, the choice between the peripheral
and the ADC is done through the DMA_CONFIG register.



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