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Minor changes in hal_serial_lld driver 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@10661 35acf78f-673a-0410-8e92-d51de3d6d3f4
This commit is contained in:
edolomb 2017-09-21 16:07:49 +00:00
parent 4e19f446f3
commit 32a8740a7c
1 changed files with 35 additions and 1 deletions
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36
os/hal/ports/SAMA/LLD/USARTv1/hal_serial_lld.c
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@ -30,6 +30,32 @@
/* Driver local definitions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local macros. */
/*===========================================================================*/
/**
* @brief Enable write protection on SD registers block.
*
* @param[in] sdp pointer to a SD register block
*
* @notapi
*/
#define sdEnableWP(sdp) { \
sdp->UART_WPMR = UART_WPMR_WPKEY_PASSWD | UART_WPMR_WPEN; \
}
/**
* @brief Disable write protection on SD registers block.
*
* @param[in] sdp pointer to a SD register block
*
* @notapi
*/
#define sdDisableWP(sdp) { \
sdp->UART_WPMR = UART_WPMR_WPKEY_PASSWD; \
}
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
@ -46,7 +72,7 @@ SerialDriver SD1;
/** @brief UART2 serial driver identifier.*/
#if SAMA_SERIAL_USE_UART2 || defined(__DOXYGEN__)
SerialDriver SD3;
SerialDriver SD2;
#endif
/** @brief UART3 serial driver identifier.*/
@ -125,6 +151,8 @@ static uint8_t sd_out_buf4[SAMA_SERIAL_UART4_IN_BUF_SIZE];
static void uart_init(SerialDriver *sdp, const SerialConfig *config) {
Uart *u = sdp->uart;
/* Disabling write protection */
sdDisableWP(u);
/* Baud rate setting.*/
u->UART_BRGR = UART_BRGR_CD(sdp->clock / (16 * config->speed));
@ -136,6 +164,8 @@ static void uart_init(SerialDriver *sdp, const SerialConfig *config) {
u->UART_CR |= UART_CR_RSTSTA;
/* Enabling Tx and Rx */
u->UART_CR |= UART_CR_RXEN | UART_CR_TXEN;
/* Enabling write protection */
sdEnableWP(u);
}
@ -147,8 +177,12 @@ static void uart_init(SerialDriver *sdp, const SerialConfig *config) {
*/
static void uart_deinit(Uart *u) {
/* Disabling write protection */
sdDisableWP(u);
u->UART_CR = 0;
u->UART_MR = 0;
/* Enabling write protection */
sdEnableWP(u);
}