diff options
Diffstat (limited to 'libcpu/arm/stm32/serial.h')
| -rw-r--r-- | libcpu/arm/stm32/serial.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/libcpu/arm/stm32/serial.h b/libcpu/arm/stm32/serial.h new file mode 100644 index 0000000000..a36cad79a2 --- /dev/null +++ b/libcpu/arm/stm32/serial.h @@ -0,0 +1,69 @@ +#ifndef __RT_HW_SERIAL_H__
+#define __RT_HW_SERIAL_H__
+
+#include <rthw.h>
+#include <rtthread.h>
+
+/* STM32F10x library definitions */
+#include <stm32f10x_lib.h>
+
+#define UART_DMA_RX_DESCRIPTOR 2
+#define UART_DMA_RX_BUFFER_SIZE 16
+
+#define UART_RX_BUFFER_SIZE 64
+#define UART_TX_BUFFER_SIZE 64
+
+struct stm32_serial_dma_rx
+{
+ DMA_Channel_TypeDef* dma_channel;
+ rt_uint8_t rx_buffer[UART_DMA_RX_DESCRIPTOR][UART_RX_BUFFER_SIZE];
+ rt_uint32_t save_descriptor;
+ rt_uint32_t read_index, read_descriptor;
+ rt_bool_t is_full;
+};
+
+/* data node for Tx Mode */
+struct stm32_serial_data_node
+{
+ rt_uint8_t *data_ptr;
+ rt_size_t data_size;
+ struct stm32_serial_data_node *next, *prev;
+};
+struct stm32_serial_dma_tx
+{
+ DMA_Channel_TypeDef* dma_channel;
+ struct stm32_serial_data_node *list_head, *list_tail;
+};
+
+struct stm32_serial_int_rx
+{
+ rt_uint8_t rx_buffer[UART_RX_BUFFER_SIZE];
+ rt_uint32_t read_index, save_index;
+};
+
+struct stm32_serial_int_tx
+{
+ rt_uint8_t tx_buffer[UART_TX_BUFFER_SIZE];
+ rt_uint32_t write_index, save_index;
+};
+
+struct stm32_serial_device
+{
+ USART_TypeDef* uart_device;
+
+ /* rx structure */
+ struct stm32_serial_int_rx* int_rx;
+ struct stm32_serial_dma_rx* dma_rx;
+
+ /* tx structure */
+ struct stm32_serial_int_tx* int_tx;
+ struct stm32_serial_dma_tx* dma_tx;
+};
+
+rt_err_t rt_hw_serial_register(rt_device_t device, const char* name, rt_uint32_t flag, struct stm32_serial_device *serial);
+
+void rt_hw_serial_isr(rt_device_t device);
+void rt_hw_serial_dma_rx_isr(rt_device_t device);
+void rt_hw_serial_dma_tx_isr(rt_device_t device);
+
+#endif
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