NTM88 RF Interrupt

キャンセル
次の結果を表示 
表示  限定  | 次の代わりに検索 
もしかして: 
610件の閲覧回数
dongyong1
Contributor I

  Dear NXP  Engineer

    I set the NTM88 register (FNUM=3 for RFCR3), can I make the data sent differently each time? I can't use the interrupt method, is there another way?

0 件の賞賛
1 解決策
576件の閲覧回数
TomasVaverka
NXP TechSupport
NXP TechSupport

Hi,

When RFCR3_FNUM is >0, the transmission of multiple frames is enabled. In this case, the same frame is transmitted multiple times. It is not possible to change the content of the frame between two transmissions.

In order to send several frames with a different content each time, the following sequence can be implemented:

  • Fill the RF buffer with the first content
  • Trigger the transmission of a single frame (RFCR3_FNUM = 0)
  • Wait for the end of the transmission
  • Fill the RF buffer with the second content
  • Trigger the transmission of a single frame (RFCR3_FNUM = 0)
  • Wait for the end of the transmission

To monitor the end of the transmission, bits RFCR7_RFIF and RFCR7_RFEF can be polled if an interrupt-based method is not possible.

After the transmission has been triggered, bit RFIF will be set at the end of the transmission, if successful. If not successful, bit RFEF will be set.

Table 127.png

After a transmission has completed, do not forget to clear RFIF/RFEF bit by setting RFIAK bit.

BR, Tomas

元の投稿で解決策を見る

3 返答(返信)
577件の閲覧回数
TomasVaverka
NXP TechSupport
NXP TechSupport

Hi,

When RFCR3_FNUM is >0, the transmission of multiple frames is enabled. In this case, the same frame is transmitted multiple times. It is not possible to change the content of the frame between two transmissions.

In order to send several frames with a different content each time, the following sequence can be implemented:

  • Fill the RF buffer with the first content
  • Trigger the transmission of a single frame (RFCR3_FNUM = 0)
  • Wait for the end of the transmission
  • Fill the RF buffer with the second content
  • Trigger the transmission of a single frame (RFCR3_FNUM = 0)
  • Wait for the end of the transmission

To monitor the end of the transmission, bits RFCR7_RFIF and RFCR7_RFEF can be polled if an interrupt-based method is not possible.

After the transmission has been triggered, bit RFIF will be set at the end of the transmission, if successful. If not successful, bit RFEF will be set.

Table 127.png

After a transmission has completed, do not forget to clear RFIF/RFEF bit by setting RFIAK bit.

BR, Tomas

318件の閲覧回数
dongyong1
Contributor I

Hi Tomas

     I  can't get it to work using interrupts and polling, it works using delays. But the delay time is not well calculated and it affects the program operation. Are there other registers that are not configured properly?

0 件の賞賛
602件の閲覧回数
dongyong1
Contributor I

Use the BOOTLOADER routine from the official website

0 件の賞賛