diff options
| author |  Peter McGoron
| 2022-07-21 13:51:55 -0400 |
|---|---|---|
| committer | Peter McGoron
| 2022-07-21 13:52:51 -0400 |
| commit | 34bb170241e1c2643cc8b6f3d5a2fee59d1226f2 (patch) | |
| tree | eea9ee1ec48e60084eabcb2d31b2b29aedf6b07f /spi_master.v | |
| parent | autogenerate mode tests (diff) | |
add read only master with tests
Diffstat (limited to 'spi_master.v')
| -rw-r--r-- | spi_master.v | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/spi_master.v b/spi_master.v index b8a3439..cc5f01d 100644 --- a/spi_master.v +++ b/spi_master.v @@ -3,7 +3,18 @@ * License, v.2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at https://mozilla.org/MPL/2.0/. */ -module spi_master + +module +`ifdef SPI_MASTER_NO_READ +spi_master_no_read +`else +`ifdef SPI_MASTER_NO_WRITE +spi_master_no_write +`else +spi_master +`endif +`endif + #( parameter WID = 24, // Width of bits per transaction. parameter WID_LEN = 5, // Length in bits required to store WID @@ -78,11 +89,15 @@ task setup_bits(); * For mode 01 and mode 10, the first action is a WRITE. */ if (POLARITY == PHASE) begin +`ifndef SPI_MASTER_NO_WRITE mosi <= to_slave[WID-1]; send_buf <= to_slave << 1; +`endif state <= CYCLE_WAIT; end else begin +`ifndef SPI_MASTER_NO_WRITE send_buf <= to_slave; +`endif state <= ON_CYCLE; end endtask |