File content as of revision 34:4493c9f6d707:

{
    "macros": [
        "NDEBUG=1"
    ],
    "config": {
        "uart_0_fifo_size": {
            "help": "UART0 FIFO buffer. FIFO buffer is filled from DMA buffer.",
            "value": 1024
        },
        "uart_dma_size": {
            "help": "UART DMA buffer. 2 buffers per instance. DMA buffer is filled by UARTE",
            "value": 32
        }
    },
    "target_overrides": {
        "*": {
            "platform.stdio-flush-at-exit": false,
            "platform.stdio-baud-rate": 115200,
            "platform.stack-stats-enabled": false,
            "platform.heap-stats-enabled": false,
            "platform.cpu-stats-enabled": false,
            "platform.thread-stats-enabled": false,
            "platform.sys-stats-enabled": false
        },
        "NRF52_DK": {
            "target.OUTPUT_EXT": "bin",
            "target.uart_hwfc": 0,
            "nordic.uart_0_fifo_size": 1024,
            "nordic.uart_dma_size": 32,
            "target.device_has_add": ["LOWPOWERTIMER"],
            "target.macros_add": ["MBED_TICKLESS"],
            "target.components_add": ["FLASHIAP"]
        }
    }
}