X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=gpif-acquisition.c;h=96476ccc4185a01319efd34c16a12568125da8c4;hb=24a04d22869658abcc96067349a588845cf9a80c;hp=18cdd79eccd8239bbf2c95dbc7b72a644fac1db8;hpb=6aa5d1f472dd35faed9085f6b2b24fa218314043;p=sigrok-firmware-fx2lafw.git
diff --git a/gpif-acquisition.c b/gpif-acquisition.c
index 18cdd79e..96476ccc 100644
--- a/gpif-acquisition.c
+++ b/gpif-acquisition.c
@@ -15,8 +15,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * along with this program; if not, see .
*/
#include
@@ -27,7 +26,7 @@
#include
#include
-__bit gpif_acquiring;
+enum gpif_status gpif_acquiring = STOPPED;
static void gpif_reset_waveforms(void)
{
@@ -63,7 +62,7 @@ static void gpif_setup_registers(void)
* GPIFWFSELECT: [7:6] = SINGLEWR index, [5:4] = SINGLERD index,
* [3:2] = FIFOWR index, [1:0] = FIFORD index
*/
- GPIFWFSELECT = (0x3 << 6) | (0x2 << 4) | (0x1 << 2) | (0x0 << 0);
+ GPIFWFSELECT = (0x3u << 6) | (0x2u << 4) | (0x1u << 2) | (0x0u << 0);
/* Contains RDY* pin values. Read-only according to TRM. */
GPIFREADYSTAT = 0;
@@ -126,7 +125,7 @@ void gpif_init_la(void)
gpif_init_flowstates();
/* Reset the status. */
- gpif_acquiring = FALSE;
+ gpif_acquiring = STOPPED;
}
static void gpif_make_delay_state(volatile BYTE *pSTATE, uint8_t delay, uint8_t output)
@@ -162,7 +161,7 @@ static void gpif_make_data_dp_state(volatile BYTE *pSTATE)
* BRANCH
* Branch to IDLE if condition is true, back to S0 otherwise.
*/
- pSTATE[0] = (7 << 3) | (0 << 0);
+ pSTATE[0] = (1 << 7) | (7 << 3) | (0 << 0);
/*
* OPCODE
@@ -184,7 +183,7 @@ static void gpif_make_data_dp_state(volatile BYTE *pSTATE)
pSTATE[24] = (6 << 3) | (6 << 0);
}
-bool gpif_acquisition_start(const struct cmd_start_acquisition *cmd)
+bool gpif_acquisition_prepare(const struct cmd_start_acquisition *cmd)
{
int i;
volatile BYTE *pSTATE = &GPIF_WAVE_DATA;
@@ -209,8 +208,7 @@ bool gpif_acquisition_start(const struct cmd_start_acquisition *cmd)
}
/* Populate delay states. */
- if ((cmd->sample_delay_h == 0 && cmd->sample_delay_l == 0) ||
- cmd->sample_delay_h >= 6)
+ if (cmd->sample_delay_h >= 6)
return false;
if (cmd->flags & CMD_START_FLAGS_CLK_CTL2) {
@@ -239,6 +237,14 @@ bool gpif_acquisition_start(const struct cmd_start_acquisition *cmd)
/* Populate S1 - the decision point. */
gpif_make_data_dp_state(pSTATE++);
+ /* Update the status. */
+ gpif_acquiring = PREPARED;
+
+ return true;
+}
+
+void gpif_acquisition_start(void)
+{
/* Execute the whole GPIF waveform once. */
gpif_set_tc16(1);
@@ -246,15 +252,13 @@ bool gpif_acquisition_start(const struct cmd_start_acquisition *cmd)
gpif_fifo_read(GPIF_EP2);
/* Update the status. */
- gpif_acquiring = TRUE;
-
- return true;
+ gpif_acquiring = RUNNING;
}
void gpif_poll(void)
{
/* Detect if acquisition has completed. */
- if (gpif_acquiring && (GPIFTRIG & 0x80)) {
+ if ((gpif_acquiring == RUNNING) && (GPIFTRIG & 0x80)) {
/* Activate NAK-ALL to avoid race conditions. */
FIFORESET = 0x80;
SYNCDELAY();
@@ -275,6 +279,6 @@ void gpif_poll(void)
FIFORESET = 0x00;
SYNCDELAY();
- gpif_acquiring = FALSE;
+ gpif_acquiring = STOPPED;
}
}