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tannewttannewt
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Save flash space
* No weak link for modules. It only impacts _os and _time and is already disabled for non-full builds. * Turn off PA00 and PA01 because they are the crystal on the Metro M0 Express. * Change ejected default to false to move it to BSS. It is set on USB connection anyway. * Set sinc_filter to const. Doesn't help flash but keeps it out of RAM.
1 parent 68eb809 commit bda3267

4 files changed

Lines changed: 7 additions & 3 deletions

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‎ports/atmel-samd/boards/metro_m0_express/mpconfigboard.h‎

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@@ -33,6 +33,10 @@
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#define DEFAULT_UART_BUS_RX (&pin_PA11)
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#define DEFAULT_UART_BUS_TX (&pin_PA10)
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// These pins are connected to the external crystal.
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#define IGNORE_PIN_PA00 1
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#define IGNORE_PIN_PA01 1
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// USB is always used internally so skip the pin objects for it.
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#define IGNORE_PIN_PA24 1
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#define IGNORE_PIN_PA25 1

‎ports/atmel-samd/common-hal/audiobusio/PDMIn.c‎

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@@ -326,7 +326,7 @@ static void setup_dma(audiobusio_pdmin_obj_t* self, uint32_t length,
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// higher sample rate than specified. Then after the audio is
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// recorded, a more expensive filter non-real-time filter could be
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// used to down-sample and low-pass.
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uint16_t sinc_filter [OVERSAMPLING] = {
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const uint16_t sinc_filter [OVERSAMPLING] = {
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0, 2, 9, 21, 39, 63, 94, 132,
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179, 236, 302, 379, 467, 565, 674, 792,
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920, 1055, 1196, 1341, 1487, 1633, 1776, 1913,

‎py/circuitpy_mpconfig.h‎

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@@ -186,7 +186,7 @@ typedef long mp_off_t;
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#define MICROPY_CPYTHON_COMPAT (CIRCUITPY_FULL_BUILD)
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#define MICROPY_PY_BUILTINS_POW3 (CIRCUITPY_FULL_BUILD)
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#define MICROPY_COMP_FSTRING_LITERAL (MICROPY_CPYTHON_COMPAT)
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#define MICROPY_MODULE_WEAK_LINKS (CIRCUITPY_FULL_BUILD)
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#define MICROPY_MODULE_WEAK_LINKS (0)
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#define MICROPY_PY_ALL_SPECIAL_METHODS (CIRCUITPY_FULL_BUILD)
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#define MICROPY_PY_BUILTINS_COMPLEX (CIRCUITPY_FULL_BUILD)
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#define MICROPY_PY_BUILTINS_FROZENSET (CIRCUITPY_FULL_BUILD)

‎supervisor/shared/usb/usb_msc_flash.c‎

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@@ -39,7 +39,7 @@
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#define MSC_FLASH_BLOCK_SIZE 512
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static bool ejected[1] = {true};
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static bool ejected[1] = {false};
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void usb_msc_mount(void) {
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// Reset the ejection tracking every time we're plugged into USB. This allows for us to battery

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