reform

commit ae5a6057a6ae0c40887ea7c93b7759c725f04097
parent 9e3269081a984b88bca97bc53699526c99c1693f
Author: Lukas F. Hartmann <lukas@mntre.com>
Date:   Thu, 25 Jun 2020 17:04:45 +0200

WIP: report battery status to SOM via SSP0 (SPI)

Diffstat:
M
reform2-lpc-fw/src/boards/reform2/board_reform2.c
 | 
22
+++++++++++++++++-----
M
reform2-lpc-fw/src/boards/reform2/board_reform2.h
 | 
2
+-
M
reform2-lpc-fw/src/core/ssp0/ssp0.c
 | 
4
++--

3 files changed, 20 insertions(+), 8 deletions(-)
diff --git a/reform2-lpc-fw/src/boards/reform2/board_reform2.c b/reform2-lpc-fw/src/boards/reform2/board_reform2.c
@@ -10,6 +10,7 @@
 #include "core/eeprom/eeprom.h"
 #include "core/pmu/pmu.h"
 #include "core/i2c/i2c.h"
+#include "core/ssp0/ssp0.h"
 #include "core/ssp1/ssp1.h"
 #include "core/uart/uart.h"
 
@@ -386,8 +387,14 @@ void boardInit(void)
   
   uartInit(CFG_UART_BAUDRATE);
   i2cInit(I2CMASTER);
+
+  // SPI1 connected to battery monitor (we're master)
   ssp1Init();
   ssp1ClockSlow();
+
+  // SPI0 connected to the main SOM (they're master)
+  ssp0Init();
+  ssp0ClockSlow();
   
   LPC_GPIO->DIR[1] |= (1 << 31);
   LPC_GPIO->DIR[1] |= (1 << 25);
@@ -423,10 +430,6 @@ void handle_commands() {
   // 4   command letter expected
   // 5   syntax error (unexpected character)
   // 6   command letter entered
-
-  // TODO get cell voltage
-  // TODO get charger state
-  // TODO get charger status / mode
   
   if (cmd_state>=ST_EXPECT_DIGIT_0 && cmd_state<=ST_EXPECT_DIGIT_3) {
     // read number or command
@@ -563,6 +566,12 @@ void handle_commands() {
   }
 }
 
+void report_to_spi(void)
+{
+  char report[64];
+  sprintf(report, "(%dmV %dmA)\n", (int)(volts*1000.0), (int)(current*1000.0));
+}
+
 int main(void)
 {
   boardInit();
@@ -646,8 +655,11 @@ int main(void)
         }
       }
     }
-    
+
+    // handle keyboard commands
     handle_commands();
+    // report to SPI0 master
+    report_to_spi();
     cur_second = delayGetSecondsActive();
 
     if (last_second != cur_second) {
diff --git a/reform2-lpc-fw/src/boards/reform2/board_reform2.h b/reform2-lpc-fw/src/boards/reform2/board_reform2.h
@@ -302,7 +302,7 @@ extern "C" {
     #define CFG_SSP_SCK1_1_20           (20)
 
     // Select the appropriate pin locations here
-    #define CFG_SSP_SCK0_LOCATION       (CFG_SSP_SCK0_1_29)
+    #define CFG_SSP_SCK0_LOCATION       (CFG_SSP_SCK0_0_10)
     #define CFG_SSP_MISO1_LOCATION      (CFG_SSP_MISO1_1_21)
     #define CFG_SSP_MOSI1_LOCATION      (CFG_SSP_MOSI1_1_22)
     #define CFG_SSP_SCK1_LOCATION       (CFG_SSP_SCK1_1_20)
diff --git a/reform2-lpc-fw/src/core/ssp0/ssp0.c b/reform2-lpc-fw/src/core/ssp0/ssp0.c
@@ -143,8 +143,8 @@ void ssp0Init(void)
     Dummy = LPC_SSP0->DR;
   }  
   
-  /* Enable device and set it to master mode, no loopback */
-  LPC_SSP0->CR1 = SSP0_CR1_SSE_ENABLED | SSP0_CR1_MS_MASTER | SSP0_CR1_LBM_NORMAL;
+  /* Enable device and set it to slave mode, no loopback */
+  LPC_SSP0->CR1 = SSP0_CR1_SSE_ENABLED | SSP0_CR1_MS_SLAVE | SSP0_CR1_LBM_NORMAL;
 }
 
 /**************************************************************************/