diff options
Diffstat (limited to 'fpga/common')
| -rw-r--r-- | fpga/common/remote_access.v | 53 |
1 files changed, 40 insertions, 13 deletions
diff --git a/fpga/common/remote_access.v b/fpga/common/remote_access.v index 1482cfb..c323097 100644 --- a/fpga/common/remote_access.v +++ b/fpga/common/remote_access.v @@ -38,7 +38,7 @@ module remote_access( input sram_wren_in, input sram_clock_in, input [7:0] sram_data_in, - input [13:0] sram_address_in, + input [(RAM_ADDR_BITS-1):0] sram_address_in, output [7:0] sram_data_out, output sram_available, input sram_processing_done, @@ -56,7 +56,6 @@ module remote_access( reg [7:0] remote_access_4_bit_input_reg; reg [7:0] remote_access_8_bit_input_reg; reg [15:0] remote_access_16_bit_input_reg; - reg [15:0] remote_access_data_ram_size_reg = (2**RAM_ADDR_BITS); reg [3:0] remote_access_lcd_data_out_reg; reg remote_access_lcd_rs_out_reg; reg remote_access_lcd_rw_out_reg; @@ -192,12 +191,12 @@ module remote_access( reg data_storage_remote_enable = 0; wire data_storage_clka; wire [7:0] data_storage_dina; - wire [13:0] data_storage_addra; + wire [(RAM_ADDR_BITS-1):0] data_storage_addra; wire data_storage_write_enable; wire [7:0] data_storage_data_out; reg [7:0] data_storage_dina_reg; - reg [13:0] data_storage_addra_reg; + reg [(RAM_ADDR_BITS-1):0] data_storage_addra_reg; reg data_storage_write_enable_reg; data_storage #(RAM_ADDR_BITS) data_storage(.clka(data_storage_clka), .dina(data_storage_dina), .addra(data_storage_addra), @@ -251,6 +250,9 @@ module remote_access( reg transmit_main_status = 0; reg transmit_main_status_done = 0; + + reg transmit_dsp_ram_size = 0; + reg transmit_dsp_ram_size_done = 0; reg transmit_input_status = 0; reg transmit_input_status_done = 0; @@ -267,7 +269,7 @@ module remote_access( reg transmit_dsp_status = 0; reg transmit_dsp_status_done = 0; reg transmit_dsp_status_holdoff = 0; - reg [15:0] transmit_dsp_status_counter = 0; + reg [RAM_ADDR_BITS:0] transmit_dsp_status_counter = 0; reg transmit_led_status = 0; reg transmit_led_status_done = 0; @@ -294,7 +296,7 @@ module remote_access( if (tx_toggle == 0) begin if ((transmit_4_bit_status == 1) && (transmit_4_bit_status_done == 0)) begin TxD_data = transmitter_4_bit_state; - + TxD_start = 1; tx_toggle = 1; @@ -303,7 +305,7 @@ module remote_access( if ((transmit_8_bit_status == 1) && (transmit_8_bit_status_done == 0)) begin TxD_data = transmitter_8_bit_state; - + TxD_start = 1; tx_toggle = 1; @@ -330,16 +332,25 @@ module remote_access( if ((transmit_main_status == 1) && (transmit_main_status_done == 0)) begin TxD_data = transmitter_main_state; - + TxD_start = 1; tx_toggle = 1; transmit_main_status_done = 1; end + + if ((transmit_dsp_ram_size == 1) && (transmit_dsp_ram_size_done == 0)) begin + TxD_data = RAM_ADDR_BITS; + + TxD_start = 1; + tx_toggle = 1; + + transmit_dsp_ram_size_done = 1; + end if ((transmit_input_status == 1) && (transmit_input_status_done == 0)) begin TxD_data = transmitter_input_state; - + TxD_start = 1; tx_toggle = 1; @@ -348,7 +359,7 @@ module remote_access( if ((transmit_lcd_status == 1) && (transmit_lcd_status_done == 0)) begin TxD_data = lcd_display_string[transmit_lcd_status_counter]; - + TxD_start = 1; tx_toggle = 1; @@ -360,7 +371,7 @@ module remote_access( if ((transmit_led_status == 1) && (transmit_led_status_done == 0)) begin TxD_data = led_display_bytes[transmit_led_status_counter]; - + TxD_start = 1; tx_toggle = 1; @@ -396,7 +407,7 @@ module remote_access( if (transmit_dsp_status_counter >= (2**RAM_ADDR_BITS)) begin transmit_dsp_status_done = 1; data_storage_write_enable_reg = 1'bz; - data_storage_addra_reg = 14'bz; + data_storage_addra_reg = {(RAM_ADDR_BITS){1'bz}}; end end end @@ -424,6 +435,10 @@ module remote_access( if (transmit_main_status == 0) begin transmit_main_status_done = 0; end + + if (transmit_dsp_ram_size == 0) begin + transmit_dsp_ram_size_done = 0; + end if (transmit_input_status == 0) begin transmit_input_status_done = 0; @@ -528,6 +543,13 @@ module remote_access( if (transmit_main_status_done == 1) begin transmit_main_status = 0; if (transmit_all_data_state == 1) begin + transmit_dsp_ram_size = 1; + end + end + + if (transmit_dsp_ram_size_done == 1) begin + transmit_dsp_ram_size = 0; + if (transmit_all_data_state == 1) begin transmit_4_bit_status = 1; end end @@ -599,7 +621,7 @@ module remote_access( data_storage_remote_enable = 0; sram_available_reg = 1; data_storage_write_enable_reg = 1'bz; - data_storage_addra_reg = 14'bz; + data_storage_addra_reg = {(RAM_ADDR_BITS){1'bz}}; waiting_on_dsp_processing = 1; transmit_dsp_rx_complete = 1; next_byte_is_command_prev_command = 0; @@ -698,6 +720,11 @@ module remote_access( // Transmit the contents of RAM... transmit_dsp_status = 1; end + + if (serial_command_buffer == 79) begin + // Transmit the DSP RAM size + transmit_dsp_ram_size = 1; + end end else begin if (next_byte_is_command == 1) begin // The previous byte was the command--now load in the data! |