Sojus07/hackrf
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add SGPIO configuration to support GPDMA interrupts.

Browse Source
This commit is contained in:
Jared Boone
2013-12-08 11:54:50 -08:00
parent 45c0a6c31a
commit 809df425c1
1 changed files with 40 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
firmware/common/sgpio.c
View File

@ -129,7 +129,8 @@ void sgpio_configure(
? (0xFF << 0)
: (0x00 << 0);
SGPIO_GPIO_OENREG =
(1L << 11) // direction output SGPIO11 active
(1L << 14) // GPDMA burst request SGPIO14 active
| (1L << 11) // direction output SGPIO11 active
| (1L << 10) // disable output SGPIO10 active
| (0L << 9) // capture input SGPIO9 (output i is tri-stated)
| (0L << 8) // clock input SGPIO8 (output i is tri-stated)
@ -152,6 +153,10 @@ void sgpio_configure(
SGPIO_OUT_MUX_CFG_P_OE_CFG(0) /* 0x0 gpio_oe (state set by GPIO_OEREG) */
| SGPIO_OUT_MUX_CFG_P_OUT_CFG(4) /* 0x4=gpio_out (level set by GPIO_OUTREG) */
;
SGPIO_OUT_MUX_CFG(14) = // SGPIO14: Output: internal GPDMA burst request
SGPIO_OUT_MUX_CFG_P_OE_CFG(0) /* 0x4 dout_oem1 (1-bit mode) */
| SGPIO_OUT_MUX_CFG_P_OUT_CFG(0) /* 0x0 dout_doutm1 (1-bit mode) */
;
const uint_fast8_t output_multiplexing_mode =
multi_slice ? 11 : 9;
@ -174,10 +179,12 @@ void sgpio_configure(
SGPIO_SLICE_F,
SGPIO_SLICE_L,
};
const uint_fast8_t slice_gpdma = SGPIO_SLICE_H;
const uint_fast8_t pos = multi_slice ? 0x1f : 0x03;
const bool single_slice = !multi_slice;
const uint_fast8_t slice_count = multi_slice ? 8 : 1;
const uint_fast8_t clk_capture_mode = (direction == SGPIO_DIRECTION_TX) ? 0 : 1;
uint32_t slice_enable_mask = 0;
/* Configure Slice A, I, E, J, C, K, F, L (multi_slice mode) */
@ -187,7 +194,6 @@ void sgpio_configure(
const bool input_slice = (i == 0) && (direction != SGPIO_DIRECTION_TX); /* Only for slice0/A and RX mode set input_slice to 1 */
const uint_fast8_t concat_order = (input_slice || single_slice) ? 0 : 3; /* 0x0=Self-loop(slice0/A RX mode), 0x3=8 slices */
const uint_fast8_t concat_enable = (input_slice || single_slice) ? 0 : 1; /* 0x0=External data pin(slice0/A RX mode), 0x1=Concatenate data */
const uint_fast8_t clk_capture_mode = (direction == SGPIO_DIRECTION_TX) ? 0 : 1;
SGPIO_MUX_CFG(slice_index) =
SGPIO_MUX_CFG_CONCAT_ORDER(concat_order)
@ -222,6 +228,38 @@ void sgpio_configure(
slice_enable_mask |= (1 << slice_index);
}
SGPIO_MUX_CFG(slice_gpdma) =
SGPIO_MUX_CFG_CONCAT_ORDER(0) /* Self-loop */
| SGPIO_MUX_CFG_CONCAT_ENABLE(1)
| SGPIO_MUX_CFG_QUALIFIER_SLICE_MODE(0) /* Select qualifier slice A(0x0) */
| SGPIO_MUX_CFG_QUALIFIER_PIN_MODE(1) /* Select qualifier pin SGPIO9(0x1) */
| SGPIO_MUX_CFG_QUALIFIER_MODE(3) /* External SGPIO */
| SGPIO_MUX_CFG_CLK_SOURCE_SLICE_MODE(0) /* Select clock source slice D(0x0) */
| SGPIO_MUX_CFG_CLK_SOURCE_PIN_MODE(0) /* Source Clock Pin 0x0 = SGPIO8 */
| SGPIO_MUX_CFG_EXT_CLK_ENABLE(1) /* External clock signal(pin) selected */
;
SGPIO_SLICE_MUX_CFG(slice_gpdma) =
SGPIO_SLICE_MUX_CFG_INV_QUALIFIER(0) /* 0x0=Use normal qualifier. */
| SGPIO_SLICE_MUX_CFG_PARALLEL_MODE(0) /* 0x0=Shift 1 bit per clock. */
| SGPIO_SLICE_MUX_CFG_DATA_CAPTURE_MODE(0) /* 0x0=Detect rising edge. (Condition for input bit match interrupt) */
| SGPIO_SLICE_MUX_CFG_INV_OUT_CLK(0) /* 0x0=Normal clock. */
| SGPIO_SLICE_MUX_CFG_CLKGEN_MODE(1) /* 0x1=Use external clock from a pin or other slice */
| SGPIO_SLICE_MUX_CFG_CLK_CAPTURE_MODE(clk_capture_mode) /* 0x0=Use rising clock edge, 0x1=Use falling clock edge */
| SGPIO_SLICE_MUX_CFG_MATCH_MODE(0) /* 0x0=Do not match data */
;
SGPIO_PRESET(slice_gpdma) = 0; // External clock, don't care
SGPIO_COUNT(slice_gpdma) = 0; // External clock, don't care
SGPIO_POS(slice_gpdma) =
SGPIO_POS_POS_RESET(0x1f)
| SGPIO_POS_POS(0x1f)
;
SGPIO_REG(slice_gpdma) = 0x77777777; // Primary output data register, LSB -> out
SGPIO_REG_SS(slice_gpdma) = 0x77777777; // Shadow output data register, LSB -> out1
slice_enable_mask |= (1 << slice_gpdma);
// Start SGPIO operation by enabling slice clocks.
SGPIO_CTRL_ENABLE = slice_enable_mask;
}