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path: root/drivers/chibios/serial_usart.c
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Diffstat (limited to 'drivers/chibios/serial_usart.c')
-rw-r--r--drivers/chibios/serial_usart.c208
1 files changed, 0 insertions, 208 deletions
diff --git a/drivers/chibios/serial_usart.c b/drivers/chibios/serial_usart.c
deleted file mode 100644
index cae29388c3..0000000000
--- a/drivers/chibios/serial_usart.c
+++ /dev/null
@@ -1,208 +0,0 @@
-/* Copyright 2021 QMK
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "serial_usart.h"
-
-#ifndef USE_GPIOV1
-// The default PAL alternate modes are used to signal that the pins are used for USART
-# ifndef SERIAL_USART_TX_PAL_MODE
-# define SERIAL_USART_TX_PAL_MODE 7
-# endif
-#endif
-
-#ifndef SERIAL_USART_DRIVER
-# define SERIAL_USART_DRIVER SD1
-#endif
-
-#ifdef SOFT_SERIAL_PIN
-# define SERIAL_USART_TX_PIN SOFT_SERIAL_PIN
-#endif
-
-static inline msg_t sdWriteHalfDuplex(SerialDriver* driver, uint8_t* data, uint8_t size) {
- msg_t ret = sdWrite(driver, data, size);
-
- // Half duplex requires us to read back the data we just wrote - just throw it away
- uint8_t dump[size];
- sdRead(driver, dump, size);
-
- return ret;
-}
-#undef sdWrite
-#define sdWrite sdWriteHalfDuplex
-
-static inline msg_t sdWriteTimeoutHalfDuplex(SerialDriver* driver, uint8_t* data, uint8_t size, uint32_t timeout) {
- msg_t ret = sdWriteTimeout(driver, data, size, timeout);
-
- // Half duplex requires us to read back the data we just wrote - just throw it away
- uint8_t dump[size];
- sdReadTimeout(driver, dump, size, timeout);
-
- return ret;
-}
-#undef sdWriteTimeout
-#define sdWriteTimeout sdWriteTimeoutHalfDuplex
-
-static inline void sdClear(SerialDriver* driver) {
- while (sdGetTimeout(driver, TIME_IMMEDIATE) != MSG_TIMEOUT) {
- // Do nothing with the data
- }
-}
-
-static SerialConfig sdcfg = {
- (SERIAL_USART_SPEED), // speed - mandatory
- (SERIAL_USART_CR1), // CR1
- (SERIAL_USART_CR2), // CR2
- (SERIAL_USART_CR3) // CR3
-};
-
-void handle_soft_serial_slave(void);
-
-/*
- * This thread runs on the slave and responds to transactions initiated
- * by the master
- */
-static THD_WORKING_AREA(waSlaveThread, 2048);
-static THD_FUNCTION(SlaveThread, arg) {
- (void)arg;
- chRegSetThreadName("slave_transport");
-
- while (true) {
- handle_soft_serial_slave();
- }
-}
-
-__attribute__((weak)) void usart_init(void) {
-#if defined(USE_GPIOV1)
- palSetLineMode(SERIAL_USART_TX_PIN, PAL_MODE_STM32_ALTERNATE_OPENDRAIN);
-#else
- palSetLineMode(SERIAL_USART_TX_PIN, PAL_MODE_ALTERNATE(SERIAL_USART_TX_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN);
-#endif
-
-#if defined(USART_REMAP)
- USART_REMAP;
-#endif
-}
-
-void usart_master_init(void) {
- usart_init();
-
- sdcfg.cr3 |= USART_CR3_HDSEL;
- sdStart(&SERIAL_USART_DRIVER, &sdcfg);
-}
-
-void usart_slave_init(void) {
- usart_init();
-
- sdcfg.cr3 |= USART_CR3_HDSEL;
- sdStart(&SERIAL_USART_DRIVER, &sdcfg);
-
- // Start transport thread
- chThdCreateStatic(waSlaveThread, sizeof(waSlaveThread), HIGHPRIO, SlaveThread, NULL);
-}
-
-static SSTD_t* Transaction_table = NULL;
-static uint8_t Transaction_table_size = 0;
-
-void soft_serial_initiator_init(SSTD_t* sstd_table, int sstd_table_size) {
- Transaction_table = sstd_table;
- Transaction_table_size = (uint8_t)sstd_table_size;
-
- usart_master_init();
-}
-
-void soft_serial_target_init(SSTD_t* sstd_table, int sstd_table_size) {
- Transaction_table = sstd_table;
- Transaction_table_size = (uint8_t)sstd_table_size;
-
- usart_slave_init();
-}
-
-void handle_soft_serial_slave(void) {
- uint8_t sstd_index = sdGet(&SERIAL_USART_DRIVER); // first chunk is always transaction id
- SSTD_t* trans = &Transaction_table[sstd_index];
-
- // Always write back the sstd_index as part of a basic handshake
- sstd_index ^= HANDSHAKE_MAGIC;
- sdWrite(&SERIAL_USART_DRIVER, &sstd_index, sizeof(sstd_index));
-
- if (trans->initiator2target_buffer_size) {
- sdRead(&SERIAL_USART_DRIVER, trans->initiator2target_buffer, trans->initiator2target_buffer_size);
- }
-
- if (trans->target2initiator_buffer_size) {
- sdWrite(&SERIAL_USART_DRIVER, trans->target2initiator_buffer, trans->target2initiator_buffer_size);
- }
-
- if (trans->status) {
- *trans->status = TRANSACTION_ACCEPTED;
- }
-}
-
-/////////
-// start transaction by initiator
-//
-// int soft_serial_transaction(int sstd_index)
-//
-// Returns:
-// TRANSACTION_END
-// TRANSACTION_NO_RESPONSE
-// TRANSACTION_DATA_ERROR
-#ifndef SERIAL_USE_MULTI_TRANSACTION
-int soft_serial_transaction(void) {
- uint8_t sstd_index = 0;
-#else
-int soft_serial_transaction(int index) {
- uint8_t sstd_index = index;
-#endif
-
- if (sstd_index > Transaction_table_size) return TRANSACTION_TYPE_ERROR;
- SSTD_t* trans = &Transaction_table[sstd_index];
- msg_t res = 0;
-
- sdClear(&SERIAL_USART_DRIVER);
-
- // First chunk is always transaction id
- sdWriteTimeout(&SERIAL_USART_DRIVER, &sstd_index, sizeof(sstd_index), TIME_MS2I(SERIAL_USART_TIMEOUT));
-
- uint8_t sstd_index_shake = 0xFF;
-
- // Which we always read back first so that we can error out correctly
- // - due to the half duplex limitations on return codes, we always have to read *something*
- // - without the read, write only transactions *always* succeed, even during the boot process where the slave is not ready
- res = sdReadTimeout(&SERIAL_USART_DRIVER, &sstd_index_shake, sizeof(sstd_index_shake), TIME_MS2I(SERIAL_USART_TIMEOUT));
- if (res < 0 || (sstd_index_shake != (sstd_index ^ HANDSHAKE_MAGIC))) {
- dprintf("serial::usart_shake NO_RESPONSE\n");
- return TRANSACTION_NO_RESPONSE;
- }
-
- if (trans->initiator2target_buffer_size) {
- res = sdWriteTimeout(&SERIAL_USART_DRIVER, trans->initiator2target_buffer, trans->initiator2target_buffer_size, TIME_MS2I(SERIAL_USART_TIMEOUT));
- if (res < 0) {
- dprintf("serial::usart_transmit NO_RESPONSE\n");
- return TRANSACTION_NO_RESPONSE;
- }
- }
-
- if (trans->target2initiator_buffer_size) {
- res = sdReadTimeout(&SERIAL_USART_DRIVER, trans->target2initiator_buffer, trans->target2initiator_buffer_size, TIME_MS2I(SERIAL_USART_TIMEOUT));
- if (res < 0) {
- dprintf("serial::usart_receive NO_RESPONSE\n");
- return TRANSACTION_NO_RESPONSE;
- }
- }
-
- return TRANSACTION_END;
-}
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