| /* |
| * SPDX-FileCopyrightText: 2020 Efabless Corporation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| // This include is relative to $CARAVEL_PATH (see Makefile) |
| #include <defs.h> |
| #include <stub.c> |
| |
| #define GPIO0_OE_WRITE_ADDR ((uint32_t*)0x33031000) |
| #define GPIO0_OE_SET_ADDR ((uint32_t*)0x33031004) |
| #define GPIO0_OE_CLEAR_ADDR ((uint32_t*)0x33031008) |
| #define GPIO0_OE_TOGGLE_ADDR ((uint32_t*)0x3303100C) |
| #define GPIO0_OUTPUT_WRITE_ADDR ((uint32_t*)0x33031010) |
| #define GPIO0_OUTPUT_SET_ADDR ((uint32_t*)0x33031014) |
| #define GPIO0_OUTPUT_CLEAR_ADDR ((uint32_t*)0x33031018) |
| #define GPIO0_OUTPUT_TOGGLE_ADDR ((uint32_t*)0x3303101C) |
| #define GPIO0_INPUT_ADDR ((uint32_t*)0x33031020) |
| #define GPIO1_OE_WRITE_ADDR ((uint32_t*)0x33032000) |
| #define GPIO1_OE_SET_ADDR ((uint32_t*)0x33032004) |
| #define GPIO1_OE_CLEAR_ADDR ((uint32_t*)0x33032008) |
| #define GPIO1_OE_TOGGLE_ADDR ((uint32_t*)0x3303200C) |
| #define GPIO1_OUTPUT_WRITE_ADDR ((uint32_t*)0x33032010) |
| #define GPIO1_OUTPUT_SET_ADDR ((uint32_t*)0x33032014) |
| #define GPIO1_OUTPUT_CLEAR_ADDR ((uint32_t*)0x33032018) |
| #define GPIO1_OUTPUT_TOGGLE_ADDR ((uint32_t*)0x3303201C) |
| #define GPIO1_INPUT_ADDR ((uint32_t*)0x33032020) |
| |
| #define PWM0_CONFIGURATION_REGISTER ((uint32_t*)0x33021000) |
| #define PWM0_COUNTER_TOP_VALUE ((uint32_t*)0x33021004) |
| #define PWM0_COUNTER_VALUE ((uint32_t*)0x33021008) |
| #define PWM0_OUTPUT0_COMPARE ((uint32_t*)0x33021010) |
| #define PWM0_OUTPUT1_COMPARE ((uint32_t*)0x33021014) |
| #define PWM0_OUTPUT2_COMPARE ((uint32_t*)0x33021018) |
| #define PWM0_OUTPUT3_COMPARE ((uint32_t*)0x3302101C) |
| #define PWM1_CONFIGURATION_REGISTER ((uint32_t*)0x33022000) |
| #define PWM1_COUNTER_TOP_VALUE ((uint32_t*)0x33022004) |
| #define PWM1_COUNTER_VALUE ((uint32_t*)0x33022008) |
| #define PWM1_OUTPUT0_COMPARE ((uint32_t*)0x33022010) |
| #define PWM1_OUTPUT1_COMPARE ((uint32_t*)0x33022014) |
| #define PWM1_OUTPUT2_COMPARE ((uint32_t*)0x33022018) |
| #define PWM1_OUTPUT3_COMPARE ((uint32_t*)0x3302201C) |
| #define PWM2_CONFIGURATION_REGISTER ((uint32_t*)0x33023000) |
| #define PWM2_COUNTER_TOP_VALUE ((uint32_t*)0x33023004) |
| #define PWM2_COUNTER_VALUE ((uint32_t*)0x33023008) |
| #define PWM2_OUTPUT0_COMPARE ((uint32_t*)0x33023010) |
| #define PWM2_OUTPUT1_COMPARE ((uint32_t*)0x33023015) |
| #define PWM2_OUTPUT2_COMPARE ((uint32_t*)0x33023018) |
| #define PWM2_OUTPUT3_COMPARE ((uint32_t*)0x3302301C) |
| #define PWM3_CONFIGURATION_REGISTER ((uint32_t*)0x33024000) |
| #define PWM3_COUNTER_TOP_VALUE ((uint32_t*)0x33024004) |
| #define PWM3_COUNTER_VALUE ((uint32_t*)0x33024008) |
| #define PWM3_OUTPUT0_COMPARE ((uint32_t*)0x33024010) |
| #define PWM3_OUTPUT1_COMPARE ((uint32_t*)0x33024014) |
| #define PWM3_OUTPUT2_COMPARE ((uint32_t*)0x33024018) |
| #define PWM3_OUTPUT3_COMPARE ((uint32_t*)0x3302401C) |
| |
| #define MPRJ_WB_ADDRESS (*(volatile uint32_t*)0x30000000) |
| #define MPRJ_WB_DATA_LOCATION 0x30008000 |
| |
| void wbWrite (uint32_t* location, uint32_t value) |
| { |
| // Write the address |
| uint32_t locationData = (uint32_t)location; |
| MPRJ_WB_ADDRESS = locationData & 0xFFFF8000; |
| |
| // Write the data |
| uint32_t writeAddress = (locationData & 0x00007FFF) | MPRJ_WB_DATA_LOCATION; |
| *((volatile uint32_t*)writeAddress) = value; |
| } |
| |
| uint32_t wbRead (uint32_t* location) |
| { |
| // Write the address |
| uint32_t locationData = (uint32_t)location; |
| MPRJ_WB_ADDRESS = locationData & 0xFFFF8000; |
| |
| // Write the data |
| uint32_t writeAddress = (locationData & 0x00007FFF) | MPRJ_WB_DATA_LOCATION; |
| return *((volatile uint32_t*)writeAddress); |
| } |
| |
| void nextTest (bool testPassing) |
| { |
| if (testPassing) |
| { |
| wbWrite (GPIO0_OUTPUT_SET_ADDR, 0x03000); |
| } |
| else |
| { |
| wbWrite (GPIO0_OUTPUT_CLEAR_ADDR, 0x01000); |
| wbWrite (GPIO0_OUTPUT_SET_ADDR, 0x02000); |
| } |
| |
| wbWrite (GPIO0_OUTPUT_CLEAR_ADDR, 0x02000); |
| } |
| |
| uint32_t tryGetPWMState (uint32_t* address, uint32_t valueMask, uint32_t state, uint32_t maxTries) |
| { |
| uint32_t tries = maxTries; |
| while (tries > 0 && (wbRead (address) & valueMask) != state) tries--; |
| return tries; |
| } |
| |
| void main () |
| { |
| /* |
| IO Control Registers |
| | DM | VTRIP | SLOW | AN_POL | AN_SEL | AN_EN | MOD_SEL | INP_DIS | HOLDH | OEB_N | MGMT_EN | |
| | 3-bits | 1-bit | 1-bit | 1-bit | 1-bit | 1-bit | 1-bit | 1-bit | 1-bit | 1-bit | 1-bit | |
| |
| Output: 0000_0110_0000_1110 (0x1808) = GPIO_MODE_USER_STD_OUTPUT |
| | DM | VTRIP | SLOW | AN_POL | AN_SEL | AN_EN | MOD_SEL | INP_DIS | HOLDH | OEB_N | MGMT_EN | |
| | 110 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | |
| |
| |
| Input: 0000_0001_0000_1111 (0x0402) = GPIO_MODE_USER_STD_INPUT_NOPULL |
| | DM | VTRIP | SLOW | AN_POL | AN_SEL | AN_EN | MOD_SEL | INP_DIS | HOLDH | OEB_N | MGMT_EN | |
| | 001 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | |
| |
| */ |
| |
| /* Set up the housekeeping SPI to be connected internally so */ |
| /* that external pin changes don't affect it. */ |
| |
| // Connect the housekeeping SPI to the SPI master |
| // so that the CSB line is not left floating. This allows |
| // all of the GPIO pins to be used for user functions. |
| |
| // https://github.com/efabless/caravel/blob/main/docs/other/gpio.txt |
| |
| // Enable the wishbone bus |
| reg_wb_enable = 1; |
| |
| // Enable GPIO |
| reg_mprj_io_12 = GPIO_MODE_USER_STD_OUTPUT; |
| reg_mprj_io_13 = GPIO_MODE_USER_STD_OUTPUT; |
| reg_mprj_io_14 = GPIO_MODE_USER_STD_OUTPUT; |
| reg_mprj_io_15 = GPIO_MODE_USER_STD_OUTPUT; |
| reg_mprj_io_16 = GPIO_MODE_USER_STD_OUTPUT; |
| |
| /* Apply configuration */ |
| reg_mprj_xfer = 1; |
| while (reg_mprj_xfer == 1) {} |
| |
| // Setup test output |
| bool testPass = true; |
| wbWrite (GPIO0_OUTPUT_WRITE_ADDR, 0x01000); |
| wbWrite (GPIO0_OE_WRITE_ADDR, ~0x03000); |
| |
| // Check device 0 config |
| uint32_t device0Config = (0b11001100 << 6) | (0x1 << 5) | 0x03; |
| wbWrite (PWM0_CONFIGURATION_REGISTER, device0Config); |
| if (wbRead (PWM0_CONFIGURATION_REGISTER) != device0Config) testPass = false; |
| nextTest (testPass); |
| |
| // Check device 0 counter top value |
| uint32_t device0TopValue = 0x1388 - 1; |
| wbWrite (PWM0_COUNTER_TOP_VALUE, device0TopValue); |
| if (wbRead (PWM0_COUNTER_TOP_VALUE) != device0TopValue) testPass = false; |
| nextTest (testPass); |
| |
| // Check device 1 config |
| uint32_t device1Config = (0b00010001 << 6) | (0x1 << 5) | 0x02; |
| wbWrite (PWM1_CONFIGURATION_REGISTER, device1Config); |
| if (wbRead (PWM1_CONFIGURATION_REGISTER) != device1Config) testPass = false; |
| nextTest (testPass); |
| |
| // Check device 1 counter top value |
| uint32_t device1TopValue = 0x2710 - 1; |
| wbWrite (PWM1_COUNTER_TOP_VALUE, device1TopValue); |
| if (wbRead (PWM1_COUNTER_TOP_VALUE) != device1TopValue) testPass = false; |
| nextTest (testPass); |
| |
| // Check device 0 ouput value 2 compare value |
| uint32_t device0Output2Compare = 0x09C4 - 1; // 2500 -> 0.5ms off 0.5ms on |
| wbWrite (PWM0_OUTPUT2_COMPARE, device0Output2Compare); |
| if (wbRead (PWM0_OUTPUT2_COMPARE) != device0Output2Compare) testPass = false; |
| nextTest (testPass); |
| |
| // Check device 0 ouput value 3 compare value |
| uint32_t device0Output3Compare = 0x0DAC - 1; // 4500 -> 0.7ms off 0.3ms on |
| wbWrite (PWM0_OUTPUT3_COMPARE, device0Output3Compare); |
| if (wbRead (PWM0_OUTPUT3_COMPARE) != device0Output3Compare) testPass = false; |
| nextTest (testPass); |
| |
| // Check device 1 ouput value 0 compare value |
| uint32_t device1Output0Compare = 0x07D0 - 1; // 2000 -> 0.2ms off 0.8ms on |
| wbWrite (PWM1_OUTPUT0_COMPARE, device1Output0Compare); |
| if (wbRead (PWM1_OUTPUT0_COMPARE) != device1Output0Compare) testPass = false; |
| nextTest (testPass); |
| |
| // Check device 0 counter changes |
| uint32_t counterValue = wbRead (PWM0_COUNTER_VALUE) & 0xFFFF; |
| // Check twice to make absolutely sure that it wasn't just an unlucky coincidence that they where the same |
| if ((wbRead (PWM0_COUNTER_VALUE) & 0xFFFF) == counterValue && (wbRead (PWM0_COUNTER_VALUE) & 0xFFFF) == counterValue) testPass = false; |
| nextTest (testPass); |
| |
| // Check internal value goes high |
| uint32_t tries = tryGetPWMState (PWM0_COUNTER_VALUE, 0x40000, 0x40000, 20); |
| if (tries == 0) testPass = false; |
| nextTest (testPass); |
| |
| // Check internal value goes low |
| tries = tryGetPWMState (PWM0_COUNTER_VALUE, 0x40000, 0x00000, 20); |
| if (tries == 0) testPass = false; |
| nextTest (testPass); |
| |
| //----------------Device 0 ouput value 2----------------// |
| tries = tryGetPWMState (PWM0_COUNTER_VALUE, 0x40000, 0x00000, 20); |
| if (tries == 0) testPass = false; |
| |
| tries = tryGetPWMState (PWM0_COUNTER_VALUE, 0x40000, 0x40000, 20); |
| if (tries == 0) testPass = false; |
| |
| tries = tryGetPWMState (PWM0_COUNTER_VALUE, 0x40000, 0x00000, 20); |
| if (tries == 0) testPass = false; |
| nextTest (testPass); |
| |
| //----------------Device 0 ouput value 3----------------// |
| tries = tryGetPWMState (PWM0_COUNTER_VALUE, 0x80000, 0x00000, 20); |
| if (tries == 0) testPass = false; |
| |
| tries = tryGetPWMState (PWM0_COUNTER_VALUE, 0x80000, 0x80000, 20); |
| if (tries == 0) testPass = false; |
| |
| tries = tryGetPWMState (PWM0_COUNTER_VALUE, 0x80000, 0x00000, 20); |
| if (tries == 0) testPass = false; |
| nextTest (testPass); |
| |
| //----------------Device 1 ouput value 0----------------// |
| tries = tryGetPWMState (PWM1_COUNTER_VALUE, 0x10000, 0x00000, 20); |
| if (tries == 0) testPass = false; |
| |
| tries = tryGetPWMState (PWM1_COUNTER_VALUE, 0x10000, 0x10000, 20); |
| if (tries == 0) testPass = false; |
| |
| tries = tryGetPWMState (PWM1_COUNTER_VALUE, 0x10000, 0x00000, 20); |
| if (tries == 0) testPass = false; |
| |
| // Finish test |
| nextTest (testPass); |
| } |