I'm trying to read data from the CC2540 USART and send it over BLE. The problem is that I'm losing characters almost immediately. The device writing to the UART is sending 6 bytes at 115200, 8N1. I've also tried 57600 without any success.
I've verified that there's never any lost characters from that side. I've also verified that if I ignore the serial data, and just write a constant incrementing byte stream from the CC2540, through BLE, I don't lose anything.
I'll see about 60 good bytes or so and then I'll lose 10-15 bytes.
I'm using BLE 1.3.
I've checked and I'm not getting any errors like HAL_UART_RX_FULL or HAL_UART_RX_ABOUT_FULL.
I've also dramatically increased the size of the RX DMA buffer to no avail.
I've disabled POWER_SAVING and am using DMA. And I've made sure to disable ClkDivOnHalt and HaltDuringRF with the following lines:
HCI_EXT_HaltDuringRfCmd( HCI_EXT_HALT_DURING_RF_DISABLE );
HCI_EXT_ClkDivOnHaltCmd( HCI_EXT_DISABLE_CLK_DIVIDE_ON_HALT );
Here's some relevant #defines from my project.
HAL_DMA=TRUE
xPOWER_SAVING
xPLUS_BROADCASTER
HAL_LED=TRUE
HAL_UART
HAL_UART_ISR=0
HAL_UART_DMA=1
HAL_UART_USB=0
HAL_UART_RX_FLUSH=FALSE
HAL_UART_DMA_RX_MAX=512
HAL_KEY=FALSE
HAL_LCD=FALSE
HAL_ADC=FALSE
HAL_LED=FALSE
HAL_AES=FALSE
HAL_HID=FALSE
At this point I'm out of ideas...
