Increased HCI_RX_BUF_QUEUE_SIZE to 16 to Resolve OTA DFU
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Using a Segger J-Link, I traced the following error, thrown by hci_mem_pool_rx_produce(): "NRF_ERROR_NO_MEM due to m_rx_buffer_queue.free_window_count == 0" In that trace, the value of @Length, being passed into hci_mem_pool_rx_produce() was 14. nRF52 Device Information: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ MCU Variant = nRF52840 0x41414330 Memory (FLASH) = 1024 KB Memory (RAM) = 256 KB ARM Cortex-M4 Processor Revision = v1 MDK Version = v8.24.1 TinyUSB Version = v0.5.0 LittleFS Version = v1.1 Bootloader/DFU Revision = s140 6.1.1 SoftDevice Version = v6.1.1 BSP Library = v0.14.0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Desktop Platform Information: macOS 10.14, as well as 10.15 Mobile Devices Used: An iPhone 8 (iOS 11 + 12) as well as an iPhone X (iOS 12 + 13)
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Using a Segger J-Link, I traced the following error, thrown by
hci_mem_pool_rx_produce():NRF_ERROR_NO_MEM due to m_rx_buffer_queue.free_window_count == 0In that trace, the value of
length, being passed tohci_mem_pool_rx_produce()was14. Alas, increasingHCI_RX_BUF_QUEUE_SIZEresolved the issue. I have quite a handful of these boards, and the error was consistently resolved across the board in both my iOS and Android app.nRF52 Device Information:
Desktop Platform Information: macOS 10.14, as well as 10.15
Mobile Devices Used: An iPhone 8 (iOS 11 + 12) as well as an iPhone X (iOS 12 + 13)