Commit f382f444 authored by danicampora's avatar danicampora
Browse files

cc3200: Fixes and improvements to the SD card driver.

parent 963d7c7e
......@@ -88,7 +88,7 @@ DiskInfo_t sd_disk_info = {CARD_TYPE_UNKNOWN, CARD_VERSION_1, CARD_CAP_CLASS_SD
static unsigned int CardSendCmd (unsigned int ulCmd, unsigned int ulArg) {
unsigned long ulStatus;
// Clear interrupt status
// Clear the interrupt status
MAP_SDHostIntClear(SDHOST_BASE,0xFFFFFFFF);
// Send command
......@@ -286,6 +286,22 @@ DSTATUS sd_disk_init (void) {
return sd_disk_info.bStatus;
}
//*****************************************************************************
//
//! De-initializes the physical drive
//!
//! This function de-initializes the physical drive
//*****************************************************************************
void sd_disk_deinit (void) {
sd_disk_info.ucCardType = CARD_TYPE_UNKNOWN;
sd_disk_info.ulVersion = CARD_VERSION_1;
sd_disk_info.ulCapClass = CARD_CAP_CLASS_SDSC;
sd_disk_info.ulNofBlock = 0;
sd_disk_info.ulBlockSize = 0;
sd_disk_info.bStatus = STA_NOINIT;
sd_disk_info.usRCA = 0;
}
//*****************************************************************************
//
//! Gets the disk status.
......@@ -360,8 +376,6 @@ DRESULT sd_disk_read (BYTE* pBuffer, DWORD ulSectorNumber, UINT SectorCount) {
pBuffer += 4;
}
CardSendCmd(CMD_STOP_TRANS, 0);
// Wait for the command to complete
while (!(MAP_SDHostIntStatus(SDHOST_BASE) & SDHOST_INT_TC));
Res = RES_OK;
}
}
......@@ -432,8 +446,6 @@ DRESULT sd_disk_write (const BYTE* pBuffer, DWORD ulSectorNumber, UINT SectorCou
// Wait for transfer complete
while (!(MAP_SDHostIntStatus(SDHOST_BASE) & SDHOST_INT_TC));
CardSendCmd(CMD_STOP_TRANS, 0);
// Wait for the command to complete
while (!(MAP_SDHostIntStatus(SDHOST_BASE) & SDHOST_INT_TC));
Res = RES_OK;
}
}
......
......@@ -20,6 +20,7 @@ typedef struct
extern DiskInfo_t sd_disk_info;
DSTATUS sd_disk_init (void);
void sd_disk_deinit (void);
DSTATUS sd_disk_status (void);
bool sd_disk_ready (void);
DRESULT sd_disk_read (BYTE* pBuffer, DWORD ulSectorNumber, UINT bSectorCount);
......
......@@ -40,6 +40,8 @@
#include "pybpin.h"
#include "pybsd.h"
#include "ff.h"
#include "diskio.h"
#include "sd_diskio.h"
#include "simplelink.h"
#include "debug.h"
#include "mpexception.h"
......@@ -54,10 +56,8 @@ typedef struct {
mp_obj_base_t base;
FATFS *fatfs;
pin_obj_t *pin_clk;
pin_obj_t *pin_detect;
bool pinsset;
bool enabled;
bool inpath;
} pybsd_obj_t;
/******************************************************************************
......@@ -81,16 +81,8 @@ void pybsd_init0 (void) {
ASSERT ((pybsd_obj.fatfs = mem_Malloc(sizeof(FATFS))) != NULL);
}
bool pybsd_is_present(void) {
if (pybsd_obj.pin_detect) {
return pybsd_obj.enabled && MAP_GPIOPinRead(pybsd_obj.pin_detect->port, pybsd_obj.pin_detect->bit);
}
return pybsd_obj.enabled;
}
void pybsd_deinit (void) {
pybsd_disable ((mp_obj_t)&pybsd_obj);
pybsd_obj.pin_detect = NULL;
}
/******************************************************************************
......@@ -100,7 +92,6 @@ void pybsd_deinit (void) {
STATIC void pybsd_init (pybsd_obj_t *self) {
// Configure the clock pin as output only
MAP_PinDirModeSet(self->pin_clk->pin_num, PIN_DIR_MODE_OUT);
// Enable SD peripheral clock
MAP_PRCMPeripheralClkEnable(PRCM_SDHOST, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
// Reset MMCHS
......@@ -109,8 +100,6 @@ STATIC void pybsd_init (pybsd_obj_t *self) {
MAP_SDHostInit(SDHOST_BASE);
// Configure the card clock
MAP_SDHostSetExpClk(SDHOST_BASE, MAP_PRCMPeripheralClockGet(PRCM_SDHOST), PYBSD_FREQUENCY_HZ);
self->enabled = true;
}
/******************************************************************************/
......@@ -119,22 +108,17 @@ STATIC void pybsd_init (pybsd_obj_t *self) {
/// \classmethod \constructor()
/// Configure the pins used for the sd card.
/// May receive 0, 6 or 7 arguments. The 7th optional argument is the card detect pin.
/// this pin needs no external pull-up and must be low when the sdcard is inserted.
/// May receive 0, or 6 arguments.
///
/// Usage:
/// sd = pyb.SD()
////
/// sd = pyb.SD(d0_pin, d0_af, clk_pin, clk_af, cmd_pin, cmd_af)
///
/// and:
///
/// sd = pyb.SD(d0_pin, d0_af, clk_pin, clk_af, cmd_pin, cmd_af, card_detect_pin)
///
STATIC mp_obj_t pybsd_make_new (mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 0, 7, false);
mp_arg_check_num(n_args, n_kw, 0, 6, false);
if (n_args >= 6) {
if (n_args == 6) {
// save the clock pin for later use
pybsd_obj.pin_clk = (pin_obj_t *)pin_find(args[2]);
......@@ -145,20 +129,10 @@ STATIC mp_obj_t pybsd_make_new (mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_
// configure the command pin with pull-up enabled
pin_config ((pin_obj_t *)pin_find(args[4]), mp_obj_get_int(args[5]), 0, PIN_TYPE_STD_PU, PIN_STRENGTH_4MA);
// card detect pin was provided
if (n_args == 7) {
pybsd_obj.pin_detect = (pin_obj_t *)pin_find(args[6]);
pin_config (pybsd_obj.pin_detect, PIN_MODE_0, GPIO_DIR_MODE_IN, PIN_TYPE_STD_PU, PIN_STRENGTH_4MA);
}
pybsd_obj.pinsset = true;
pybsd_obj.base.type = &pyb_sd_type;
}
else if (n_args == 0) {
if (!pybsd_obj.pinsset) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, mpexception_num_type_invalid_arguments));
}
}
else {
else if (!pybsd_obj.pinsset) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, mpexception_num_type_invalid_arguments));
}
......@@ -170,20 +144,22 @@ STATIC mp_obj_t pybsd_make_new (mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_
STATIC mp_obj_t pybsd_enable (mp_obj_t self_in) {
pybsd_obj_t *self = self_in;
// do the init first
pybsd_init (self);
if (!self->enabled) {
// do the init first
pybsd_init (self);
// try to mount the sd card on /SD
if (FR_OK != f_mount(self->fatfs, "/SD", 1)) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_operation_failed));
}
// try to mount the sd card on /SD
if (FR_OK != f_mount(self->fatfs, "/SD", 1)) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_operation_failed));
}
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_SD));
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_SD_slash_LIB));
self->inpath = true;
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_SD));
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_SD_slash_LIB));
// register it with the sleep module
pybsleep_add ((const mp_obj_t)&pybsd_obj, (WakeUpCB_t)pybsd_init);
// register it with the sleep module
pybsleep_add ((const mp_obj_t)&pybsd_obj, (WakeUpCB_t)pybsd_init);
self->enabled = true;
}
return mp_const_none;
}
......@@ -198,16 +174,20 @@ STATIC mp_obj_t pybsd_disable (mp_obj_t self_in) {
// unmount the sd card
f_mount (NULL, "/SD", 1);
// remove sd paths from mp_sys_path
if (self->inpath) {
mp_obj_list_remove(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_SD));
mp_obj_list_remove(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_SD_slash_LIB));
self->inpath = false;
}
mp_obj_list_remove(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_SD));
mp_obj_list_remove(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_SD_slash_LIB));
// disable the peripheral
MAP_PRCMPeripheralClkDisable(PRCM_SDHOST, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
// unregister with the sleep module
// de-initialze de sd card at diskio level
sd_disk_deinit();
// unregister it with the sleep module
pybsleep_remove (self);
// change the drive in case it was /SD
f_chdrive("/SFLASH");
}
return mp_const_none;
}
......
......@@ -27,11 +27,10 @@
#define PYBSD_H_
#if MICROPY_HW_HAS_SDCARD
extern const mp_obj_type_t pyb_sd_type;
void pybsd_init0 (void);
bool pybsd_is_present(void);
void pybsd_deinit (void);
extern const mp_obj_type_t pyb_sd_type;
#endif
#endif // PYBSD_H_
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