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comparison hw.c @ 49:ace431a0d0f5

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Add SDIO code poached from STM. Use FatFS to read from SD card. LFN doesn't work reliably so it's disabled for now.
author Daniel O'Connor <darius@dons.net.au>
date Wed, 03 Apr 2013 23:34:20 +1030
parents 2db4bb90cfca
children bb52e6dad784
comparison
equal deleted inserted replaced
48:2f336d212c74 49:ace431a0d0f5
295 volatile uint32_t *DWT_CONTROL = (uint32_t *)0xe0001000; 295 volatile uint32_t *DWT_CONTROL = (uint32_t *)0xe0001000;
296 volatile uint32_t *SCB_DEMCR = (uint32_t *)0xe000edfc; 296 volatile uint32_t *SCB_DEMCR = (uint32_t *)0xe000edfc;
297 297
298 *SCB_DEMCR = *SCB_DEMCR | 0x01000000; 298 *SCB_DEMCR = *SCB_DEMCR | 0x01000000;
299 *DWT_CONTROL = *DWT_CONTROL | 1 ; // enable the counter 299 *DWT_CONTROL = *DWT_CONTROL | 1 ; // enable the counter
300
301 /* Setup SDIO
302 * See SD_LowLevelInit from libs/STM32F10x_StdPeriph_Lib_V3.5.0/Utilities/STM32_EVAL/STM3210E_EVAL/stm3210e_eval.c
303 */
304
305 /* GPIOC and GPIOD Periph clock enable */
306 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD, ENABLE);
307
308 /* Configure SDIO pins for AF
309 PC8 -> SD0
310 PC9 -> SD1
311 PC10 -> SD2
312 PC11 -> SD3
313 PC12 -> SCK
314 */
315 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12;
316 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
317 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
318 GPIO_Init(GPIOC, &GPIO_InitStructure);
319
320 /* Configure PD2 -> CMD SDIO pin for AF */
321 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
322 GPIO_Init(GPIOD, &GPIO_InitStructure);
323
324 /* Enable the SDIO AHB Clock */
325 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_SDIO, ENABLE);
326
327 /* Enable the DMA2 Clock */
328 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2, ENABLE);
300 } 329 }