59 lines
2.4 KiB
C
59 lines
2.4 KiB
C
#ifndef __BOOTLOADER_H__
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#define __BOOTLOADER_H__
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// Includes:
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#include <stdint.h>
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#include <stddef.h>
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#include "attributes.h"
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#include "i2c_addresses.h"
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// Macros:
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#define BOOTLOADER_TAG 0x6766636B
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#define BOOTLOADER_TIMEOUT_MS 100
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#define CLOCK_FLAG_HIGH_SPEED_MODE 0x01
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#define DEFINE_BOOTLOADER_CONFIG_AREA(address) \
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const ATTR_BOOTLOADER_CONFIG bootloader_config_t BootloaderConfig = { \
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.tag = BOOTLOADER_TAG, \
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.enabledPeripherals = EnabledBootloaderPeripherial_I2c, \
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.i2cSlaveAddress = address, \
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.peripheralDetectionTimeoutMs = BOOTLOADER_TIMEOUT_MS, \
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.clockFlags = CLOCK_FLAG_HIGH_SPEED_MODE, \
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.clockDivider = ~0 \
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};
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// Typedefs:
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typedef enum {
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EnabledBootloaderPeripherial_Uart = (1<<0),
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EnabledBootloaderPeripherial_I2c = (1<<1),
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EnabledBootloaderPeripherial_Spi = (1<<2),
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EnabledBootloaderPeripherial_Can = (1<<3),
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EnabledBootloaderPeripherial_UsbHid = (1<<4),
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EnabledBootloaderPeripherial_UsbMsc = (1<<7),
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} enabled_bootloader_peripheral_t;
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typedef struct {
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uint32_t tag; // Magic number to verify bootloader configuration is valid. Must be set to 'kcfg'.
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uint32_t reserved[3];
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uint8_t enabledPeripherals; // Bitfield of peripherals to enable.
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// bit 0 - LPUART, bit 1 - I2C, bit 2 - SPI, bit 3 - CAN, bit 4 - USB
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uint8_t i2cSlaveAddress; // If not 0xFF, used as the 7-bit I2C slave address.
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// If 0xFF, defaults to 0x10 for I2C slave address.
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uint16_t peripheralDetectionTimeoutMs; // Timeout in milliseconds for active peripheral detection.
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// If 0xFFFF, defaults to 5 seconds.
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uint16_t reserved2[2];
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uint32_t reserved3;
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uint8_t clockFlags; // The flags in the clockFlags configuration field are enabled if the corresponding bit is cleared (0).
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// bit 0 - HighSpeed Enable high speed mode (i.e., 48 MHz).
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uint8_t clockDivider; // Inverted value of the divider to use for core and bus clocks when in high speed mode.
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} bootloader_config_t;
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// Functions:
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void JumpToBootloader(void);
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#endif
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