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authorPerry Hung <iperry@alum.mit.edu>2010-04-25 19:01:28 -0400
committerPerry Hung <iperry@alum.mit.edu>2010-04-25 19:01:28 -0400
commit434e223114b0398b92f3c027747f82bd7187569a (patch)
treebf1ba6b5a0bca0381749930c123f283e8c62e422 /core/comm
parent3bd0b34803173100db3699e62c021fb04042c495 (diff)
downloadlibrambutan-434e223114b0398b92f3c027747f82bd7187569a.tar.gz
librambutan-434e223114b0398b92f3c027747f82bd7187569a.zip
fix: Remove core directory from botched merge.
Diffstat (limited to 'core/comm')
-rw-r--r--core/comm/HardwareSPI.cpp138
-rw-r--r--core/comm/HardwareSPI.h57
2 files changed, 0 insertions, 195 deletions
diff --git a/core/comm/HardwareSPI.cpp b/core/comm/HardwareSPI.cpp
deleted file mode 100644
index 51093cb..0000000
--- a/core/comm/HardwareSPI.cpp
+++ /dev/null
@@ -1,138 +0,0 @@
-/* *****************************************************************************
- * The MIT License
- *
- * Copyright (c) 2010 Perry Hung.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- * ****************************************************************************/
-
-/**
- * @brief HardwareSPI "wiring-like" api for SPI
- */
-
-/* NOTES:
- *
- * Speeds:
- * -----------------------------------
- * Interface num: SPI1 SPI2
- * Bus APB2 APB1
- * -----------------------------------
- * Prescaler Frequencies
- * -----------------------------------
- * 2: N/A 18 000 000
- * 4: 18 000 000 9 000 000
- * 8: 9 000 000 4 500 000
- * 16: 4 500 000 2 250 000
- * 32: 2 250 000 1 125 000
- * 64: 1 125 000 562 500
- * 128: 562 500 281 250
- * 256: 281 250 140 625
- *
- * TODO: Do the complementary PWM outputs mess up SPI2?
- * */
-
-#include "wiring.h"
-#include "spi.h"
-#include "HardwareSPI.h"
-
-static const uint32 prescaleFactors[MAX_SPI_FREQS] = {
- SPI_PRESCALE_2, // SPI_18MHZ
- SPI_PRESCALE_4, // SPI_9MHZ
- SPI_PRESCALE_8, // SPI_4_5MHZ
- SPI_PRESCALE_16, // SPI_2_25MHZ
- SPI_PRESCALE_32, // SPI_1_125MHZ
- SPI_PRESCALE_64, // SPI_562_500KHZ
- SPI_PRESCALE_128, // SPI_281_250KHZ
- SPI_PRESCALE_256, // SPI_140_625KHZ
-};
-
-/**
- * @brief Initialize a SPI peripheral
- * @param freq frequency to run at, must one of the following values:
- * - SPI_18MHZ
- * - SPI_9MHZ
- * - SPI_4_5MHZ
- * - SPI_2_25MHZ
- * - SPI_1_125MHZ
- * - SPI_562_500KHZ
- * - SPI_281_250KHZ
- * - SPI_140_625KHZ
- * @param endianness endianness of the data frame, must be either LSBFIRST
- * or MSBFIRST
- * @param mode SPI standard CPOL and CPHA levels
- */
-void HardwareSPI::begin(SPIFrequency freq, uint32 endianness, uint32 mode) {
- uint32 spi_num = this->spi_num;
- uint32 high_speed = 0;
- uint32 index;
- uint32 prescale;
-
- if ((freq >= MAX_SPI_FREQS) ||
- !((endianness == LSBFIRST) ||
- (endianness == MSBFIRST)) ||
- (mode >= 4)) {
- return;
- }
-
- if (spi_num == 1) {
- /* SPI1 is too fast for 140625 */
- if (freq == SPI_140_625KHZ) {
- return;
- }
-
- /* Turn off PWM on shared pins */
- timers_disable_channel(3, 2);
- timers_disable_channel(3, 1);
- }
-
- endianness = (endianness == LSBFIRST) ? SPI_LSBFIRST : SPI_MSBFIRST;
- prescale = (spi_num == 1) ? prescaleFactors[freq + 1] : prescaleFactors[freq];
-
- spi_init(spi_num, prescale, endianness, 0);
-}
-
-/**
- * @brief Initialize a SPI peripheral with a default speed of 1.125 MHZ, MSBFIRST,
- * mode 0
- * @param mode SPI standard CPOL and CPHA levels
- */
-void HardwareSPI::begin(void) {
- begin(SPI_1_125MHZ, MSBFIRST, 0);
-}
-
-/**
- * @brief send a byte out the spi peripheral
- * @param data byte to send
- */
-void HardwareSPI::send(uint8 data) {
- spi_tx(this->spi_num, data);
-}
-
-
-/**
- * @brief read a byte from the spi peripheral
- * @return byte in the buffer
- */
-uint8 HardwareSPI::recv(void) {
- return spi_rx(this->spi_num);
-}
-
-HardwareSPI::HardwareSPI(uint32 spi_num) {
- this->spi_num = spi_num;
-}
diff --git a/core/comm/HardwareSPI.h b/core/comm/HardwareSPI.h
deleted file mode 100644
index b974334..0000000
--- a/core/comm/HardwareSPI.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/* *****************************************************************************
- * The MIT License
- *
- * Copyright (c) 2010 Perry Hung.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- * ****************************************************************************/
-
-/**
- * @brief HardwareSPI definitions
- */
-
-#ifndef _HARDWARESPI_H_
-#define _HARDWARESPI_H_
-
-typedef enum SPIFrequency {
- SPI_18MHZ = 0,
- SPI_9MHZ = 1,
- SPI_4_5MHZ = 2,
- SPI_2_25MHZ = 3,
- SPI_1_125MHZ = 4,
- SPI_562_500KHZ = 5,
- SPI_281_250KHZ = 6,
- SPI_140_625KHZ = 7,
- MAX_SPI_FREQS = 8,
-} SPIFrequency;
-
-class HardwareSPI {
- private:
- uint32 spi_num;
-
- public:
- HardwareSPI(uint32 spi_num);
- void begin(void);
- void begin(SPIFrequency freq, uint32 endianness, uint32 mode);
- void send(uint8 data);
- uint8 recv(void);
-};
-
-#endif
-