diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/nds/libnds/source/arm7/spi.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/nds/libnds/source/arm7/spi.c | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/c/src/lib/libbsp/arm/nds/libnds/source/arm7/spi.c b/c/src/lib/libbsp/arm/nds/libnds/source/arm7/spi.c deleted file mode 100644 index f7f9a312cf..0000000000 --- a/c/src/lib/libbsp/arm/nds/libnds/source/arm7/spi.c +++ /dev/null @@ -1,75 +0,0 @@ -/*--------------------------------------------------------------------------------- - - Copyright (C) 2005 - Michael Noland (joat) - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any - damages arising from the use of this software. - - Permission is granted to anyone to use this software for any - purpose, including commercial applications, and to alter it and - redistribute it freely, subject to the following restrictions: - - 1. The origin of this software must not be misrepresented; you - must not claim that you wrote the original software. If you use - this software in a product, an acknowledgment in the product - documentation would be appreciated but is not required. - 2. Altered source versions must be plainly marked as such, and - must not be misrepresented as being the original software. - 3. This notice may not be removed or altered from any source - distribution. - ----------------------------------------------------------------------------------*/ - -#include <nds/arm7/serial.h> - - -//--------------------------------------------------------------------------------- -int writePowerManagement(int reg, int command) { -//--------------------------------------------------------------------------------- - // Write the register / access mode (bit 7 sets access mode) - while (REG_SPICNT & SPI_BUSY); - REG_SPICNT = SPI_ENABLE | SPI_BAUD_1MHZ | SPI_BYTE_MODE | SPI_CONTINUOUS | SPI_DEVICE_POWER; - REG_SPIDATA = reg; - - // Write the command / start a read - while (REG_SPICNT & SPI_BUSY); - REG_SPICNT = SPI_ENABLE | SPI_BAUD_1MHZ | SPI_BYTE_MODE | SPI_DEVICE_POWER; - REG_SPIDATA = command; - - // Read the result - while (REG_SPICNT & SPI_BUSY); - return REG_SPIDATA & 0xFF; -} - - -//--------------------------------------------------------------------------------- -void readFirmware(uint32 address, void * destination, uint32 size) { -//--------------------------------------------------------------------------------- - uint8 * buffer = (uint8 *)destination; - - // Read command - while (REG_SPICNT & SPI_BUSY); - REG_SPICNT = SPI_ENABLE | SPI_BYTE_MODE | SPI_CONTINUOUS | SPI_DEVICE_FIRMWARE; - REG_SPIDATA = FIRMWARE_READ; - while (REG_SPICNT & SPI_BUSY); - - // Set the address - REG_SPIDATA = (address>>16) & 0xFF; - while (REG_SPICNT & SPI_BUSY); - REG_SPIDATA = (address>>8) & 0xFF; - while (REG_SPICNT & SPI_BUSY); - REG_SPIDATA = (address>>0) & 0xFF; - while (REG_SPICNT & SPI_BUSY); - - // Read the data - while (size--) { - REG_SPIDATA = 0; - while (REG_SPICNT & SPI_BUSY); - *buffer++ = (REG_SPIDATA & 0xFF); - } - - REG_SPICNT = 0; -} - |