godzil/quickdev16
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o add io test

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This commit is contained in:
David Voswinkel
2009-05-31 17:22:24 +02:00
parent d69d2bf398
commit 2fd08d0df7
20 changed files with 1314 additions and 37 deletions
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20
poc/avr_sdcard/main.c
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@@ -58,14 +58,15 @@ extern FILE uart_stdout;
//#define FILENAME "vram2.smc" //ok
//#define FILENAME "super02.smc" //ok
//#define FILENAME "super01.smc"//ok
//#define FILENAME "crc.smc" //ok
#define FILENAME "crc.smc" //ok
//#define FILENAME "banks.smc" //ok
//#define FILENAME "hungry.smc" //ok
//#define FILENAME "arkanoid.smc"//ok
//#define FILENAME "eric.smc"
#define FILENAME "turrican.smc"
//#define FILENAME "super01.smc"
#define ROMSIZE 4
#define ROMSIZE 2 // 4 == 4mbit == 512kb
// 2 == 2mbit == 256kb
#define DUMPNAME "dump256.smc"
#define BUFFER_SIZE 512
#define BLOCKS (ROMSIZE << 8)
@@ -213,20 +214,29 @@ void sram_write(uint32_t addr, uint8_t data)
{
RAM_DIR = 0xff;
CTRL_PORT |= (1<<R_RD);
/* deactive RD and WR on ram */
CTRL_PORT |= (1<<R_RD);
CTRL_PORT |= (1<<R_WR);
/* setup address */
spi_master_transmit((uint8_t)(addr>>16));
spi_master_transmit((uint8_t)(addr>>8));
spi_master_transmit((uint8_t)(addr>>0));
/* passthru address in sreg */
LATCH_PORT |= (1<<S_LATCH);
LATCH_PORT &= ~(1<<S_LATCH);
/* write enable */
CTRL_PORT &= ~(1<<R_WR);
/* busdriver toggle */
/* write data */
RAM_PORT = data;
/* disable write */
CTRL_PORT |= (1<<R_WR);
RAM_DIR = 0x00;