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Diffstat (limited to 'platform/stm32f2xx/uart.c')
-rw-r--r--platform/stm32f2xx/uart.c256
1 files changed, 0 insertions, 256 deletions
diff --git a/platform/stm32f2xx/uart.c b/platform/stm32f2xx/uart.c
deleted file mode 100644
index 7aa4c945..00000000
--- a/platform/stm32f2xx/uart.c
+++ /dev/null
@@ -1,256 +0,0 @@
-/*
- * Copyright (c) 2012 Kent Ryhorchuk
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files
- * (the "Software"), to deal in the Software without restriction,
- * including without limitation the rights to use, copy, modify, merge,
- * publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so,
- * subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
- * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-#include <stdarg.h>
-#include <reg.h>
-#include <debug.h>
-#include <stdio.h>
-#include <assert.h>
-#include <lib/cbuf.h>
-#include <kernel/thread.h>
-#include <platform/debug.h>
-#include <arch/ops.h>
-#include <dev/uart.h>
-#include <target/debugconfig.h>
-#include <stm32f2xx_rcc.h>
-#include <stm32f2xx_usart.h>
-#include <arch/arm/cm.h>
-
-#define RXBUF_SIZE 16
-
-#ifdef ENABLE_UART1
-cbuf_t uart1_rx_buf;
-#ifndef UART1_FLOWCONTROL
-#define UART1_FLOWCONTROL USART_HardwareFlowControl_None
-#endif
-#endif
-
-#ifdef ENABLE_UART2
-cbuf_t uart2_rx_buf;
-#ifndef UART2_FLOWCONTROL
-#define UART2_FLOWCONTROL USART_HardwareFlowControl_None
-#endif
-#endif
-
-#ifdef ENABLE_UART3
-cbuf_t uart3_rx_buf;
-#ifndef UART3_FLOWCONTROL
-#define UART3_FLOWCONTROL USART_HardwareFlowControl_None
-#endif
-#endif
-
-#ifdef ENABLE_UART1
-#endif
-#ifdef ENABLE_UART2
-#endif
-#ifdef ENABLE_UART3
-#endif
-
-static void usart_init1_early(USART_TypeDef *usart, uint16_t flowcontrol, int irqn)
-{
- USART_InitTypeDef init;
-
- init.USART_BaudRate = 115200;
- init.USART_WordLength = USART_WordLength_8b;
- init.USART_StopBits = USART_StopBits_1;
- init.USART_Parity = USART_Parity_No;
- init.USART_Mode = USART_Mode_Tx|USART_Mode_Rx;
- init.USART_HardwareFlowControl = flowcontrol;
-
- USART_Init(usart, &init);
- USART_ITConfig(usart, USART_IT_RXNE, DISABLE);
- NVIC_DisableIRQ(irqn);
- USART_Cmd(usart, ENABLE);
-}
-
-static void usart_init1(USART_TypeDef *usart, int irqn, cbuf_t *rxbuf)
-{
- cbuf_initialize(rxbuf, RXBUF_SIZE);
- USART_ITConfig(usart, USART_IT_RXNE, ENABLE);
- NVIC_EnableIRQ(irqn);
- USART_Cmd(usart, ENABLE);
-}
-
-void uart_init_early(void)
-{
-#ifdef ENABLE_UART1
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
-#endif
-#ifdef ENABLE_UART2
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
-#endif
-#ifdef ENABLE_UART3
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
-#endif
-
-#ifdef ENABLE_UART1
- usart_init1_early(USART1, UART1_FLOWCONTROL, USART1_IRQn);
-#endif
-#ifdef ENABLE_UART2
- usart_init1_early(USART2, UART2_FLOWCONTROL, USART2_IRQn);
-#endif
-#ifdef ENABLE_UART3
- usart_init1_early(USART3, UART3_FLOWCONTROL, USART3_IRQn);
-#endif
-}
-
-void uart_init(void)
-{
-#ifdef ENABLE_UART1
- usart_init1(USART1, USART1_IRQn, &uart1_rx_buf);
-#endif
-#ifdef ENABLE_UART2
- usart_init1(USART2, USART2_IRQn, &uart2_rx_buf);
-#endif
-#ifdef ENABLE_UART3
- usart_init1(USART3, USART3_IRQn, &uart3_rx_buf);
-#endif
-}
-
-void uart_rx_irq(USART_TypeDef *usart, cbuf_t *rxbuf)
-{
- arm_cm_irq_entry();
-
- bool resched = false;
- while (USART_GetFlagStatus(usart, USART_FLAG_RXNE)) {
- if (!cbuf_space_avail(rxbuf)) {
- // Overflow - let flow control do its thing by not
- // reading the from the FIFO.
- USART_ITConfig(usart, USART_IT_RXNE, DISABLE);
- break;
- }
-
- char c = USART_ReceiveData(usart);
- cbuf_write_char(rxbuf, c, false);
- resched = true;
- }
-
- arm_cm_irq_exit(resched);
-}
-
-#ifdef ENABLE_UART1
-void stm32_USART1_IRQ(void)
-{
- uart_rx_irq(USART1, &uart1_rx_buf);
-}
-#endif
-
-#ifdef ENABLE_UART2
-void stm32_USART2_IRQ(void)
-{
- uart_rx_irq(USART2, &uart2_rx_buf);
-}
-#endif
-
-#ifdef ENABLE_UART3
-void stm32_USART3_IRQ(void)
-{
- uart_rx_irq(USART3, &uart3_rx_buf);
-}
-#endif
-
-
-static void usart_putc(USART_TypeDef *usart, char c)
-{
- while (USART_GetFlagStatus(usart, USART_FLAG_TXE) == 0);
- USART_SendData(usart, c);
- while (USART_GetFlagStatus(usart, USART_FLAG_TC) == 0);
-}
-
-static int usart_getc(USART_TypeDef *usart, cbuf_t *rxbuf, bool wait)
-{
- char c;
- cbuf_read_char(rxbuf, &c, wait);
- if (cbuf_space_avail(rxbuf) > RXBUF_SIZE/2)
- USART_ITConfig(usart, USART_IT_RXNE, ENABLE);
-
- return c;
-}
-
-static USART_TypeDef *get_usart(int port)
-{
- switch (port) {
-#ifdef ENABLE_UART1
- case 1:
- return USART1;
-#endif
-#ifdef ENABLE_UART2
- case 2:
- return USART2;
-#endif
-#ifdef ENABLE_UART3
- case 3:
- return USART3;
-#endif
- default:
- ASSERT(false);
- return 0;
- }
-
-}
-
-static cbuf_t *get_rxbuf(int port)
-{
- switch (port) {
-#ifdef ENABLE_UART1
- case 1:
- return &uart1_rx_buf;
-#endif
-#ifdef ENABLE_UART2
- case 2:
- return &uart2_rx_buf;
-#endif
-#ifdef ENABLE_UART3
- case 3:
- return &uart3_rx_buf;
-#endif
- default:
- ASSERT(false);
- return 0;
- }
-
-}
-
-int uart_putc(int port, char c)
-{
- USART_TypeDef *usart = get_usart(port);
- usart_putc(usart, c);
- return 1;
-}
-
-int uart_getc(int port, bool wait)
-{
- cbuf_t *rxbuf = get_rxbuf(port);
- USART_TypeDef *usart = get_usart(port);
-
- return usart_getc(usart, rxbuf, wait);
-}
-
-void uart_flush_tx(int port) {}
-
-void uart_flush_rx(int port) {}
-
-void uart_init_port(int port, uint baud)
-{
- // TODO - later
- PANIC_UNIMPLEMENTED;
-}
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