nrf: Add second UARTE to busio.UART. Init uarts on startup. #1541
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tannewt
requested changes
Feb 13, 2019
ports/nrf/common-hal/busio/UART.c
Outdated
| @@ -229,15 +285,17 @@ size_t common_hal_busio_uart_write (busio_uart_obj_t *self, const uint8_t *data, | |||
| // EasyDMA can only access SRAM | |||
| uint8_t * tx_buf = (uint8_t*) data; | |||
| if ( !nrfx_is_in_ram(data) ) { | |||
| tx_buf = (uint8_t *) gc_alloc(len, false, false); | |||
| // TODO: If this is not too big, we could allocate it on the stack. | |||
| // Do a long-lived alloc so buffer won't move. | |||
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This shouldn't be long-lived because it is freed below. That will leave a hole in the long-lived area. It won't move because no other python bytecode is run while it's alive.
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OK, I was worried that MICROPY_VM_HOOK_LOOP might end up doing something. But it looks like even the displayio stuff will not trigger anything. (Just checking.)
|
Updated to not use long-lived. Travis is happy. |
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Fixes remaining tasks in #1039.