This driver interfaces the MCI (MultiMedia Card Interface) module.
It will add functions for SD/MMC card reading, writing and management.
Modules | |
| MultiMedia Card Interface (MCI) | |
| implementation | |
Functions | |
| bool | mci_adtc_start (sdmmc_cmd_def_t cmd, uint32_t arg, uint16_t block_size, uint16_t nb_block, bool access_block) |
| Send an ADTC command on the selected slot An ADTC (Addressed Data Transfer Commands) command is used for read/write access. More... | |
| bool | mci_adtc_stop (sdmmc_cmd_def_t cmd, uint32_t arg) |
| Send a command to stop an ADTC command on the selected slot. More... | |
| void | mci_deselect_device (uint8_t slot) |
| Deselect a slot. More... | |
| uint8_t | mci_get_bus_width (uint8_t slot) |
| Return the maximum bus width of a slot. More... | |
| uint32_t | mci_get_response (void) |
| Return the 32 bits response of the last command. More... | |
| void | mci_get_response_128 (uint8_t *response) |
| Return the 128-bits response of the last command. More... | |
| void | mci_init (void) |
| Initialize the low level driver. More... | |
| bool | mci_is_high_speed_capable (void) |
| Return the high speed capability of the driver. More... | |
| bool | mci_read_word (uint32_t *value) |
| Read a word on the line. More... | |
| void | mci_select_device (uint8_t slot, uint32_t clock, uint8_t bus_width, bool high_speed) |
| Select a slot and initialize it. More... | |
| void | mci_send_clock (void) |
| Send 74 clock cycles on the line of selected slot Note: It is required after card plug and before card install. More... | |
| bool | mci_send_cmd (sdmmc_cmd_def_t cmd, uint32_t arg) |
| Send a command on the selected slot. More... | |
| bool | mci_start_read_blocks (void *dest, uint16_t nb_block) |
| Start a read blocks transfer on the line Note: The driver will use the DMA available to speed up the transfer. More... | |
| bool | mci_start_write_blocks (const void *src, uint16_t nb_block) |
| Start a write blocks transfer on the line Note: The driver will use the DMA available to speed up the transfer. More... | |
| bool | mci_wait_end_of_read_blocks (void) |
| Wait the end of transfer started by mci_start_read_blocks() More... | |
| bool | mci_wait_end_of_write_blocks (void) |
| Wait the end of transfer started by mci_start_write_blocks() More... | |
| bool | mci_write_word (uint32_t value) |
| Write a word on the line. More... | |
| bool mci_adtc_start | ( | sdmmc_cmd_def_t | cmd, |
| uint32_t | arg, | ||
| uint16_t | block_size, | ||
| uint16_t | nb_block, | ||
| bool | access_block | ||
| ) |
Send an ADTC command on the selected slot An ADTC (Addressed Data Transfer Commands) command is used for read/write access.
| cmd | Command definition |
| arg | Argument of the command |
| block_size | Block size used for the transfer |
| nb_block | Total number of block for this transfer |
| access_block | if true, the x_read_blocks() and x_write_blocks() functions must be used after this function. If false, the mci_read_word() and mci_write_word() functions must be used after this function. |
References Assert, AVR32_MCI_CMDR_TRCMD_START_TRANS_MASK, AVR32_MCI_CMDR_TRDIR_READ_MASK, AVR32_MCI_CMDR_TRTYP_BLOCK_MASK, AVR32_MCI_CMDR_TRTYP_MULTI_BLOCK_MASK, AVR32_MCI_CMDR_TRTYP_SDIO_BLOCK_MASK, AVR32_MCI_CMDR_TRTYP_SDIO_BYTE_MASK, AVR32_MCI_CMDR_TRTYP_STREAM_MASK, AVR32_MCI_MR_FBYTE_MASK, mci_block_size, mci_nb_block, mci_send_cmd_execute(), mci_transfert_pos, SDMMC_CMD_MULTI_BLOCK, SDMMC_CMD_SDIO_BLOCK, SDMMC_CMD_SDIO_BYTE, SDMMC_CMD_SINGLE_BLOCK, SDMMC_CMD_STREAM, and SDMMC_CMD_WRITE.
| bool mci_adtc_stop | ( | sdmmc_cmd_def_t | cmd, |
| uint32_t | arg | ||
| ) |
Send a command to stop an ADTC command on the selected slot.
| cmd | Command definition |
| arg | Argument of the command |
References mci_send_cmd_execute(), and mci_wait_busy_on_line().
| void mci_deselect_device | ( | uint8_t | slot | ) |
Deselect a slot.
| slot | Selected slot |
References AVR32_MCI_SDCR_SDCBUS_1_BIT_MASK, and UNUSED.
| uint8_t mci_get_bus_width | ( | uint8_t | slot | ) |
Return the maximum bus width of a slot.
| slot | Selected slot |
References SD_MMC_MCI_SLOT_0_SIZE, and SD_MMC_MCI_SLOT_1_SIZE.
| uint32_t mci_get_response | ( | void | ) |
Return the 32 bits response of the last command.
| void mci_get_response_128 | ( | uint8_t * | response | ) |
Return the 128-bits response of the last command.
| response | Pointer on the array to fill with the 128-bits response |
| void mci_init | ( | void | ) |
Initialize the low level driver.
This enables the required clock and the hardware interface.
References AVR32_MCI_CSTOR_CSTOCYC_2_MASK, AVR32_MCI_CSTOR_CSTOMUL_1048576_MASK, AVR32_MCI_DTOR_DTOCYC_2_MASK, AVR32_MCI_DTOR_DTOMUL_1048576_MASK, AVR32_MCI_SDCR_SDCBUS_1_BIT_MASK, SYSCLK_DMACA, sysclk_enable_hsb_module(), sysclk_enable_pbb_module(), and SYSCLK_MCI.
| bool mci_is_high_speed_capable | ( | void | ) |
Return the high speed capability of the driver.
| bool mci_read_word | ( | uint32_t * | value | ) |
Read a word on the line.
| value | Pointer on a word to fill |
References Assert, le32_to_cpu, mci_block_size, mci_debug, mci_nb_block, mci_reset(), and mci_transfert_pos.
| void mci_select_device | ( | uint8_t | slot, |
| uint32_t | clock, | ||
| uint8_t | bus_width, | ||
| bool | high_speed | ||
| ) |
Select a slot and initialize it.
| slot | Selected slot |
| clock | Maximum clock to use (Hz) |
| bus_width | Bus width to use (1, 4 or 8) |
| high_speed | true, to enable high speed mode |
References Assert, AVR32_MCI_SDCR_SDCBUS_1_BIT_MASK, AVR32_MCI_SDCR_SDCBUS_4_BIT_MASK, AVR32_MCI_SDCR_SDCBUS_8_BIT_MASK, AVR32_MCI_SDCR_SDCSEL_0_MASK, AVR32_MCI_SDCR_SDCSEL_1_MASK, mci_set_speed(), and sysclk_get_pbb_hz().
| void mci_send_clock | ( | void | ) |
Send 74 clock cycles on the line of selected slot Note: It is required after card plug and before card install.
References AVR32_MCI_MR_FBYTE_MASK.
| bool mci_send_cmd | ( | sdmmc_cmd_def_t | cmd, |
| uint32_t | arg | ||
| ) |
Send a command on the selected slot.
| cmd | Command definition |
| arg | Argument of the command |
References AVR32_MCI_MR_FBYTE_MASK, and mci_send_cmd_execute().
| bool mci_start_read_blocks | ( | void * | dest, |
| uint16_t | nb_block | ||
| ) |
Start a read blocks transfer on the line Note: The driver will use the DMA available to speed up the transfer.
| dest | Pointer on the buffer to fill |
| nb_block | Number of block to transfer |
References Assert, AVR32_MCI_MR_FBYTE_MASK, mci_block_size, mci_nb_block, and mci_transfert_pos.
| bool mci_start_write_blocks | ( | const void * | src, |
| uint16_t | nb_block | ||
| ) |
Start a write blocks transfer on the line Note: The driver will use the DMA available to speed up the transfer.
| src | Pointer on the buffer to send |
| nb_block | Number of block to transfer |
References Assert, AVR32_MCI_MR_FBYTE_MASK, mci_block_size, mci_nb_block, and mci_transfert_pos.
| bool mci_wait_end_of_read_blocks | ( | void | ) |
Wait the end of transfer started by mci_start_read_blocks()
References mci_block_size, mci_debug, mci_nb_block, mci_reset(), and mci_transfert_pos.
| bool mci_wait_end_of_write_blocks | ( | void | ) |
Wait the end of transfer started by mci_start_write_blocks()
References Assert, mci_block_size, mci_debug, mci_nb_block, mci_reset(), and mci_transfert_pos.
| bool mci_write_word | ( | uint32_t | value | ) |
Write a word on the line.
| value | Word to send |
References Assert, cpu_to_le32, mci_block_size, mci_debug, mci_nb_block, mci_reset(), and mci_transfert_pos.
1.8.5