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allow override of XOSC_MHZ (#644)

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* And increased assertion limit to 50 as 15 was the limit for the oscillator but not for XIN
This commit is contained in:
Graham Sanderson 2021-11-01 08:11:21 -05:00 committed by GitHub
parent d7358e4ed8
commit da476610e2
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2 changed files with 5 additions and 2 deletions
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3
src/rp2040/hardware_regs/include/hardware/platform_defs.h
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@ -36,7 +36,10 @@
#define PIO_INSTRUCTION_COUNT _u(32)
// PICO_CONFIG: XOSC_MHZ, The crystal oscillator frequency in Mhz, type=int, default=12, advanced=true, group=hardware_base
#ifndef XOSC_MHZ
#define XOSC_MHZ _u(12)
#endif
#endif

4
src/rp2_common/hardware_xosc/xosc.c
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@ -13,8 +13,8 @@
#include "hardware/regs/xosc.h"
#include "hardware/xosc.h"
#if XOSC_MHZ < 1 || XOSC_MHZ > 15
#error XOSC_MHZ must be in the range 1-15
#if XOSC_MHZ < 1 || XOSC_MHZ > 50
#error XOSC_MHZ must be in the range 1-50
#endif
#define STARTUP_DELAY (((((XOSC_MHZ * MHZ) / 1000) + 128) / 256) * PICO_XOSC_STARTUP_DELAY_MULTIPLIER)