mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2026-09-11 18:29:22 -07:00
Niel Nielsen
da0a5a6ac0
Added target baud rate for UART negotiation and updated comments. Signed-off-by: Niel Nielsen <nieldk@gmail.com>
46 lines
1.7 KiB
C
46 lines
1.7 KiB
C
//-----------------------------------------------------------------------------
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// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// See LICENSE.txt for the text of the license.
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//-----------------------------------------------------------------------------
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#ifndef __BWM_UART_AT32_H
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#define __BWM_UART_AT32_H
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#include "common.h"
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// Boot/default baud. Must match UART_BAUD_RATE_DEFAULT in the ESP firmware
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// (Proxmark5_BWM_esp32). The link comes up here, then the ARM negotiates up to
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// BWM_UART_BAUD_TARGET at runtime via app_com cmd 1011 - the ESP is designed to
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// be told, not reflashed (the SET command is explicitly non-persistent).
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#define BWM_UART_BAUD 460800
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// Target baud to negotiate after link-up. 0 disables negotiation (stay at
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// BWM_UART_BAUD). Bounded by the ESP's CONFIG_SOC_UART_BITRATE_MAX and PA0/PA1
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// signal integrity; validate on hardware before raising further.
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#ifndef BWM_UART_BAUD_TARGET
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#define BWM_UART_BAUD_TARGET 921600
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#endif
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void bwm_uart_init(void);
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// Re-init UART4 + RX DMA at a new baud (used by the runtime baud negotiation).
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// Discards any bytes already in the RX ring.
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void bwm_uart_set_baud(uint32_t baud);
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// Baud the link is currently running at (updated by bwm_uart_set_baud).
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uint32_t bwm_uart_get_baud(void);
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int bwm_uart_write(const uint8_t *data, size_t len);
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uint16_t bwm_uart_rx_available(void);
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uint32_t bwm_uart_read(uint8_t *data, size_t len);
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#endif
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