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Add usart modes.

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NIIBE Yutaka
2019-02-21 16:44:01 +09:00
parent 2b18685cbf
commit 53e4d1a371
3 changed files with 28 additions and 0 deletions
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8
ChangeLog
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@@ -1,3 +1,11 @@
2019-02-21 NIIBE Yutaka <gniibe@fsij.org>
* contrib/usart.h (MODE_SMARTCARD, MODE_IRDA, MODE_IRDA_LP)
(MASK_MODE): New.
* contrib/usart-stm32f103.c (usart_config): Add support for
those modes.
2018-12-19 NIIBE Yutaka <gniibe@fsij.org>
* VERSION: 1.13.

13
contrib/usart-stm32f103.c
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@@ -168,6 +168,19 @@ usart_config (uint8_t dev_no, uint32_t config_bits)
else
USARTx->CR3 = 0;
if ((config_bits & MASK_MODE))
{
if ((config_bits & MASK_MODE) == MODE_SMARTCARD)
{
USARTx->CR2 |= (0x1 << 11);
USARTx->CR3 |= (1 << 5);
}
else if ((config_bits & MASK_MODE) == MODE_IRDA)
USARTx->CR3 |= (1 << 1);
else if ((config_bits & MASK_MODE) == MODE_IRDA_LP)
USARTx->CR3 |= (1 << 2) | (1 << 1);
}
USARTx->CR1 = cr1_config;
return 0;
}

7
contrib/usart.h
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@@ -43,6 +43,13 @@ PAR_BITS 3
/* USB: SERIAL_STATE
DSR DCD RI */
/* non-POSIX, non-USB-CDC configs */
#define MODE_SMARTCARD (1 << 30)
#define MODE_IRDA (2 << 30)
#define MODE_IRDA_LP (3 << 30)
#define MASK_MODE (0x3 << 30)
/* 0: standard, 1: smartcard, 2: IrDA, 3: IrDA-LP */
struct usart_stat {
uint8_t dev_no;