michaelh/zephyr
1
0
Fork 0
Code Releases Activity

serial: Provide STM32Cube based serial driver on stm32f1, stm32f4

Browse source 
STM32Cube based implementation allows single driver file for
all stm32 based SoCs.
By maximizing code reuse, use of STM32Cube eases new SoCs
porting into Zephyr and provides better maintanability and
maturity.

Change-Id: Ief4b723add3dfc8b2a839683559c5a4c5d5eb837
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
This commit is contained in:
Erwan Gouriou 2016-11-14 11:53:52 +01:00 • committed by Kumar Gala
commit 8c079e91c9
5 changed files with 135 additions and 258 deletions
Download patch file Download diff file Expand all files Collapse all files

142
drivers/serial/uart_stm32.h
View file

@ -15,149 +15,13 @@
*/
/**
* @brief Driver for UART port on STM32F10x family processor.
* @brief Driver for UART port on STM32F10x, STM32F40x family processor.
*
* Based on reference manual:
* STM32F101xx, STM32F102xx, STM32F103xx, STM32F105xx and STM32F107xx
* advanced ARM ® -based 32-bit MCUs
*
* Chapter 27: Universal synchronous asynchronous receiver
* transmitter (USART)
*/
#ifndef _STM32_UART_H_
#define _STM32_UART_H_
/* 27.6.1 Status register (USART_SR) */
union __sr {
uint32_t val;
struct {
uint32_t pe :1 __packed;
uint32_t fe :1 __packed;
uint32_t nf :1 __packed;
uint32_t ore :1 __packed;
uint32_t idle :1 __packed;
uint32_t rxne :1 __packed;
uint32_t tc :1 __packed;
uint32_t txe :1 __packed;
uint32_t lbd :1 __packed;
uint32_t cts :1 __packed;
uint32_t rsvd__10_15 : 6 __packed;
uint32_t rsvd__16_31 : 16 __packed;
} bit;
};
/* 27.6.2 Data register (USART_DR) */
union __dr {
uint32_t val;
struct {
uint32_t dr :8 __packed;
uint32_t rsvd__9_31 :24 __packed;
} bit;
};
/* 27.6.3 Baud rate register (USART_BRR) */
union __brr {
uint32_t val;
struct {
uint32_t fraction :4 __packed;
uint32_t mantissa :12 __packed;
uint32_t rsvd__16_31 :16 __packed;
} bit;
};
/* 27.6.4 Control register 1 (USART_CR1) */
union __cr1 {
uint32_t val;
struct {
uint32_t sbk :1 __packed;
uint32_t rwu :1 __packed;
uint32_t re :1 __packed;
uint32_t te :1 __packed;
uint32_t idleie :1 __packed;
uint32_t rxneie :1 __packed;
uint32_t tcie :1 __packed;
uint32_t txeie :1 __packed;
uint32_t peie :1 __packed;
uint32_t ps :1 __packed;
uint32_t pce :1 __packed;
uint32_t wake :1 __packed;
uint32_t m :1 __packed;
uint32_t ue :1 __packed;
#ifdef CONFIG_SOC_SERIES_SOC32F1X
uint32_t rsvd__14_15 :2 __packed;
#elif CONFIG_SOC_SERIES_SOC32F4X
uint32_t rsvd__14 :1 __packed;
uint32_t over8 :1 __packed;
#endif
uint32_t rsvd__16_31 :16 __packed;
} bit;
};
/* 27.6.5 Control register 2 (USART_CR2) */
union __cr2 {
uint32_t val;
struct {
uint32_t addr :4 __packed;
uint32_t rsvd__4 :1 __packed;
uint32_t lbdl :1 __packed;
uint32_t lbdie :1 __packed;
uint32_t rsvd__7 :1 __packed;
uint32_t lbcl :1 __packed;
uint32_t cpha :1 __packed;
uint32_t cpol :1 __packed;
uint32_t clken :1 __packed;
uint32_t stop :2 __packed;
uint32_t linen :1 __packed;
uint32_t rsvd__15_31 :17 __packed;
} bit;
};
/* 27.6.6 Control register 3 (USART_CR3) */
union __cr3 {
uint32_t val;
struct {
uint32_t eie :1 __packed;
uint32_t iren :1 __packed;
uint32_t irlp :1 __packed;
uint32_t hdsel :1 __packed;
uint32_t nack :1 __packed;
uint32_t scen :1 __packed;
uint32_t dmar :1 __packed;
uint32_t dmat :1 __packed;
uint32_t rtse :1 __packed;
uint32_t ctse :1 __packed;
uint32_t ctsie :1 __packed;
#ifdef CONFIG_SOC_SERIES_SOC32F1X
uint32_t rsvd__11_31 :21 __packed;
#elif CONFIG_SOC_SERIES_SOC32F4X
uint32_t onebit :1 __packed;
uint32_t rsvd__12_31 :20 __packed;
#endif
} bit;
};
/* 27.6.7 Guard time and prescaler register (USART_GTPR) */
union __gtpr {
uint32_t val;
struct {
uint32_t psc :8 __packed;
uint32_t gt :8 __packed;
uint32_t rsvd__16_31 :16 __packed;
} bit;
};
/* 27.6.8 USART register map */
struct uart_stm32 {
union __sr sr;
union __dr dr;
union __brr brr;
union __cr1 cr1;
union __cr2 cr2;
union __cr3 cr3;
union __gtpr gtpr;
};
/* device config */
struct uart_stm32_config {
struct uart_device_config uconf;
@ -171,8 +35,8 @@ struct uart_stm32_config {
/* driver data */
struct uart_stm32_data {
/* current baud rate */
uint32_t baud_rate;
/* Uart peripheral handler */
UART_HandleTypeDef huart;
/* clock device */
struct device *clock;
#ifdef CONFIG_UART_INTERRUPT_DRIVEN