From b3a710b0bcc8e765b32cc255dc5047323933d22e Mon Sep 17 00:00:00 2001 From: Stephen Caudle Date: Fri, 28 Oct 2011 15:44:29 -0400 Subject: Rename stm32 lib folders to be consistent with include --- lib/stm32_common/usart.c | 128 ----------------------------------------------- 1 file changed, 128 deletions(-) delete mode 100644 lib/stm32_common/usart.c (limited to 'lib/stm32_common/usart.c') diff --git a/lib/stm32_common/usart.c b/lib/stm32_common/usart.c deleted file mode 100644 index 116b159..0000000 --- a/lib/stm32_common/usart.c +++ /dev/null @@ -1,128 +0,0 @@ -/* - * This file is part of the libopencm3 project. - * - * Copyright (C) 2009 Uwe Hermann - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see . - */ - -#include - -void usart_set_baudrate(u32 usart, u32 baud, u32 clock) -{ - //u32 clock = rcc_ppre1_frequency; - - //if (usart == USART1) { - // clock = rcc_ppre2_frequency; - //} - - /* yes it is as simple as that. The reference manual is - * talking about factional calculation but it seems to be only - * marketting bable to sound awesome. It is nothing else but a - * simple divider to generate the correct baudrate. >_< If I - * am wrong feel free to correct me on that. :) (esden) - */ - USART_BRR(usart) = clock/baud; -} - -void usart_set_databits(u32 usart, u32 bits) -{ - if (bits == 8) - USART_CR1(usart) &= ~USART_CR1_M; /* 8 data bits */ - else - USART_CR1(usart) |= USART_CR1_M; /* 9 data bits */ -} - -void usart_set_stopbits(u32 usart, u32 stopbits) -{ - u32 reg32; - - reg32 = USART_CR2(usart); - reg32 = (reg32 & ~USART_CR2_STOPBITS_MASK) | stopbits; - USART_CR2(usart) = reg32; -} - -void usart_set_parity(u32 usart, u32 parity) -{ - u32 reg32; - - reg32 = USART_CR1(usart); - reg32 = (reg32 & ~USART_PARITY_MASK) | parity; - USART_CR1(usart) = reg32; -} - -void usart_set_mode(u32 usart, u32 mode) -{ - u32 reg32; - - reg32 = USART_CR1(usart); - reg32 = (reg32 & ~USART_MODE_MASK) | mode; - USART_CR1(usart) = reg32; -} - -void usart_set_flow_control(u32 usart, u32 flowcontrol) -{ - u32 reg32; - - reg32 = USART_CR3(usart); - reg32 = (reg32 & ~USART_FLOWCONTROL_MASK) | flowcontrol; - USART_CR3(usart) = reg32; -} - -void usart_enable(u32 usart) -{ - USART_CR1(usart) |= USART_CR1_UE; -} - -void usart_disable(u32 usart) -{ - USART_CR1(usart) &= ~USART_CR1_UE; -} - -void usart_send(u32 usart, u16 data) -{ - /* Send data. */ - USART_DR(usart) = (data & USART_DR_MASK); -} - -u16 usart_recv(u32 usart) -{ - /* Receive data. */ - return USART_DR(usart) & USART_DR_MASK; -} - -void usart_wait_send_ready(u32 usart) -{ - /* Wait until the data has been transferred into the shift register. */ - while ((USART_SR(usart) & USART_SR_TXE) == 0); -} - -void usart_wait_recv_ready(u32 usart) -{ - /* Wait until the data is ready to be received. */ - while ((USART_SR(usart) & USART_SR_RXNE) == 0); -} - -void usart_send_blocking(u32 usart, u16 data) -{ - usart_wait_send_ready(usart); - usart_send(usart, data); -} - -u16 usart_recv_blocking(u32 usart) -{ - usart_wait_recv_ready(usart); - - return usart_recv(usart); -} -- cgit v1.2.3